| Abdurakhimov, Shamil |  | Abdurakhimov, Shamil | Heavyweight | Russia |
| Abreu, Klidson |  | Abreu, Klidson | Light Heavyweight | Brazil |
| Adams, Juan |  | Adams, Juan | Heavyweight | USA |
| Adesanya, Israel |  | Adesanya, Israel | Middleweight | Nigeria/New Zealand |
| Aguilar, Kevin |  | Aguilar, Kevin | Featherweight | USA |
| Akhmedov, Omari |  | Akhmedov, Omari | Middleweight | Russia |
| Akman, Rostem |  | Akman, Rostem | Welterweight | Sweden |
| Alateng, Heili |  | Alateng, Heili | Bantamweight (M) | China |
| Albini, Junior |  | Albini, Junior | Heavyweight | Brazil |
| Albu, Alexandra |  | Albu, Alexandra | Strawweight | Russia |
| Alcantara, Iuri |  | Alcantara, Iuri | Bantamweight (M) | Brazil |
| Aldana, Hector |  | Aldana, Hector | Welterweight | Mexico |
| Aldana, Irene |  | Aldana, Irene | Bantamweight (W) | Mexico |
| Aldo, Jose |  | Aldo, Jose | Featherweight | Brazil |
| Aldrich, J.J |  | Aldrich, J.J | Strawweight | USA |
| Alhassan, Abdul Razak |  | Alhassan, Abdul Razak | Welterweight | USA |
 | | Aliev, Sultan | Welterweight | Russia |
| Allan, John |  | Allan, John | Light Heavyweight | Brazil |
 | | Allen, Arnold | Featherweight | UK |
| Allen, Brendan |  | Allen, Brendan | Middleweight | USA |
| Almeida, Thomas |  | Almeida, Thomas | Bantamweight (M) | Brazil |
| Alvarez, Joel |  | Alvarez, Joel | Lightweight | Spain |
| Alves, Thiago |  | Alves, Thiago | Welterweight | Brazil |
| Alves, Warlley | | Alves, Warlley | Welterweight | Brazil |
| Alvey, Sam |  | Alvey, Sam | Light Heavyweight | USA |
| Amedovski, Alen |  | Amedovski, Alen | Middleweight | Macedonia |
 | | Amirkhani, Makwan | Featherweight | Iran/Finland |
| Anders Eryk |  | Anders Eryk | Middleweight | USA |
| Anderson, Corey |  | Anderson, Corey | Light Heavyweight | USA |
| Anderson, Megan |  | Anderson, Megan | Featherweight (W) | Australia |
| Andrade, Douglas |  | Andrade, Douglas | Bantamweight (M) | Brazil |
| Andrade, Jessica |  | Andrade, Jessica | Strawweight | Brazil |
| Anjos, Rafael Dos |  | Anjos, Rafael Dos | Welterweight | Brazil |
| Ankalaev, Magomedov |  | Ankalaev, Magomedov | Light Heavyweight | Russia |
| Ansaroff, Nina |  | Ansaroff, Nina | Strawweight | USA |
| Arantes, Felipe |  | Arantes, Felipe | Featherweight | Brazil |
| Araujo, Viviane |  | Araujo, Viviane | Flyweight (W) | Brazil |
| Arce, Julio |  | Arce, Julio | Featherweight | USA |
| Arlovski, Andrei |  | Arlovski, Andrei | Heavyweight | Belarus |
| Arnett, Austin |  | Arnett, Austin | Featherweight | USA |
| Askarov, Askar |  | Askarov, Askar | Flyweight (M) | Russia |
| Asker, Cyril |  | Asker, Cyril | Heavyweight | France |
| Askren, Ben |  | Askren, Ben | Welterweight | USA |
| Assuncao, Raphael |  | Assuncao, Raphael | Bantamweight (M) | Brazil |
| Aubin-Mercier, Olivier |  | Aubin-Mercier, Olivier | Lightweight | Canada |
| Avila, Julia |  | Avila, Julia | Bantamweight (M) | USA |
| Ayari, Jessin |  | Ayari, Jessin | Lightweight | Germany |
| Azaitar, Abu |  | Azaitar, Abu | Middleweight | Germany |
| Azaitar, Ottman |  | Azaitar, Ottman | Lightweight | Morocco |
| Azure, Hunter |  | Azure, Hunter | Bantamweight (M) | USA |
| Baeza, Miguel |  | Baeza, Miguel | Welterweight | USA |
| Bahadurzada, Siyar |  | Bahadurzada, Siyar | Welterweight | Afghanistan |
| Bandenay, Humberto |  | Bandenay, Humberto | Featherweight | Peru |
| Barao, Renan |  | Barao, Renan | Bantamweight (M) | Brazil |
| Barber, Maycee | 
| Barber, Maycee | Flyweight (W) | USA |
| Barberena, Bryan |  | Barberena, Bryan | Welterweight | USA |
| Barboza, Edson |  | Barboza, Edson | Lightweight | Brazil |
| Barcelos, Raoni |  | Barcelos, Raoni | Bantamweight (M) | Brazil |
| Barriault, Marc-Andre |  | Barriault, Marc-Andre | Middleweight | Canada |
| Barzola, Enrique |  | Barzola, Enrique | Featherweight | Peru |
| Batista, Michel |  | Batista, Michel | Heavyweight | Cuba |
| Bautista, Mario |  | Bautista, Mario | Bantamweight (M) | USA |
| Bektic, Mirsad |  | Bektic, Mirsad | Featherweight | Bosnia |
| Belbita, Diana |  | Belbita, Diana | Flyweight (W) | USA |
| Belfort, Vitor |  | Belfort, Vitor | Middleweight | Brazil |
| Belluardo, Danilo |  | Belluardo, Danilo | Lightweight | Italy |
| Benavidez, Joseph |  | Benavidez, Joseph | Flyweight (M) | USA |
| Benitez, Gabriel |  | Benitez, Gabriel | Featherweight | Mexico |
| Benoit, Ryan |  | Benoit, Ryan | Flyweight (M) | USA |
| Bermudez, Dennis |  | Bermudez, Dennis | Lightweight | USA |
| Bermudez, Manny |  | Bermudez, Manny | Bantamweight (M) | USA |
| Bernardo, Talita |  | Bernardo, Talita | Bantamweight (W) | Brazil |
| Bessette, Matt |  | Bessette, Matt | Featherweight | USA |
| Bisping, Michael |  | Bisping, Michael | Middleweight | UK |
| Blachowicz, Jan |  | Blachowicz, Jan | Light Heavyweight | Poland |
| Blaydes, Curtis |  | Blaydes, Curtis | Heavyweight | USA |
| Bochniak, Kyle |  | Bochniak, Kyle | Featherweight | USA |
| Boetsch, Tim |  | Boetsch, Tim | Middleweight | USA |
| Bontorin, Rogerio |  | Bontorin, Rogerio | Flyweight (M) | Brazil |
| Borella, Mara Romero |  | Borella, Mara Romero | Flyweight (W) | Italy |
| Borg, Ray |  | Borg, Ray | Bantamweight (M) | USA |
| Boser, Tanner |  | Boser, Tanner | Heavyweight | Canada |
 | | Botelho, Poliana | Flyweight (W) | Brazil |
| Brady, Sean |  | Brady, Sean | Welterweight | USA |
| Branch, David |  | Branch, David | Middleweight | USA |
| Bravo, Martin |  | Bravo, Martin | Featherweight | Mexico |
 | | Breese, Tom | Middleweight | UK |
 | | Briones, Henry | Bantamweight (M) | Mexico |
| Brooks, Jarred |  | Brooks, Jarred | Flyweight (M) | USA |
| Brooks, Phil |  | Brooks, Phil | Welterweight | USA |
| Brown, Matt |  | Brown, Matt | Welterweight | USA |
| Brown, Randy |  | Brown, Randy | Welterweight | Jamaica |
| Brunson, Derek |  | Brunson, Derek | Middleweight | USA |
| Buren, Brianna Van |  | Buren, Brianna Van | Strawweight | USA |
| Buren, Wuliji |  | Buren, Wuliji | Bantamweight (M) | China |
| Burgos, Shane |  | Burgos, Shane | Featherweight | USA |
| Burns, Gilbert |  | Burns, Gilbert | Lightweight | Brazil |
| Byrd, Charles |  | Byrd, Charles | Middleweight | USA |
| Caceres, Alex |  | Caceres, Alex | Featherweight | USA |
| Cachoeira, Priscila |  | Cachoeira, Priscila | Flyweight (W) | Brazil |
| Calvillo, Cynthia |  | Calvillo, Cynthia | Strawweight | USA |
| Camacho, Frank |  | Camacho, Frank | Lightweight | Guam |
| Camozzi, Brian |  | Camozzi, Brian | Welterweight | USA |
| Cannetti, Guido |  | Cannetti, Guido | Bantamweight (M) | Argentina |
| Cannonier, Jared |  | Cannonier, Jared | Middleweight | USA |
| Carlos Jr, Antonio |  | Carlos Jr, Antonio | Middleweight | Brazil |
| Carmouche, Liz |  | Carmouche, Liz | Flyweight (W) | USA |
| Carneiro (Moicano), Renato |  | Carneiro (Moicano), Renato | Featherweight | Brazil |
| Carnelossi, Ariane |  | Carnelossi, Ariane | Strawweight | Brazil |
| Carolina, Luana |  | Carolina, Luana | Flyweight (W) | Brazil |
| Casey, Cortney |  | Casey, Cortney | Strawweight | USA |
| Castro, Yorgan De |  | Castro, Yorgan De | Heavyweight | Cape Verde |
| Cavedo, Karolline Rosa |  | Cavedo, Karolline Rosa | Bantamweight (W)
| Brazil |
| Cejudo, Henry |  | Cejudo, Henry | Flyweight (M)
Bantamweight (M) | USA |
| Cerrone, Donald |  | Cerrone, Donald | Lightweight | USA |
| Chagas, Luan |  | Chagas, Luan | Welterweight | Brazil |
| Chambers, Alex |  | Chambers, Alex | Strawweight | Australia |
| Chiasson, Macy |  | Chiasson, Macy | Bantamweight (W) | USA |
| Chiesa, Michael |  | Chiesa, Michael | Welterweight | USA |
| Chikadze, Giga |  | Chikadze, Giga | Featherweight | Georgia |
| Chirico, Alessio Di |  | Chirico, Alessio Di | Middleweight | Italy |
| Choi, Doo Ho |  | Choi, Doo Ho | Featherweight | S. Korea |
| Choi, Seung Woo |  | Choi, Seung Woo | Featherweight | S. Korea |
| Chookagian, Katlyn |  | Chookagian, Katlyn | Flyweight (W) | USA |
| Cifers, Hannah |  | Cifers, Hannah | Strawweight | USA |
| Cirkunov, Misha |  | Cirkunov, Misha | Light Heavyweight | Latvia |
| Clark, Devin |  | Clark, Devin | Light Heavyweight | USA |
| Clark, Jessica-Rose |  | Clark, Jessica-Rose | Bantamweight (W) | Australia |
| Colares, Felipe |  | Colares, Felipe | Featherweight | Brazil |
| Collard, Clay |  | Collard, Clay | Lightweight | USA |
| Collier, Jake |  | Collier, Jake | Light Heavyweight | USA |
| Condit, Carlos |  | Condit, Carlos | Welterweight | USA |
| Connelly, Tristan |  | Connelly, Tristan | Welterweight | USA |
| Cormier, Daniel |  | Cormier, Daniel | Heavyweight | USA |
| Correia, Bethe |  | Correia, Bethe | Bantamweight (W) | Brazil |
| Costa, Paulo Henrique |  | Costa, Paulo Henrique | Middleweight | Brazil |
| Costa, Randy |  | Costa, Randy | Bantamweight (M) | USA |
| Coulter, Rashad |  | Coulter, Rashad | Light Heavyweight | USA |
 | | Covington, Colby | Welterweight | USA |
| Craig, Paul |  | Craig, Paul | Light Heavyweight | UK |
| Crowder, Allen |  | Crowder, Allen | Heavyweight | USA |
| Crute, Jim |  | Crute, Jim | Light Heavyweight | Australia |
| Cruz, Dominick |  | Cruz, Dominick | Bantamweight (M) | USA |
| Cucciniello, Jay |  | Cucciniello, Jay | Featherweight | UK |
| Cummings, Zak |  | Cummings, Zak | Middleweight | USA |
| Cummins, Patrick |  | Cummins, Patrick | Light Heavyweight | USA |
| Cutelaba, Ion |  | Cutelaba, Ion | Light Heavyweight | Moldova |
| Dalby, Nicolas |  | Dalby, Nicolas | Welterweight | Denmark |
| Danaa, Batgerel |  | Danaa, Batgerel | Bantamweight (M) | Mongolia |
| Danho, Jarjis |  | Danho, Jarjis | Heavyweight | Syria |
| Dariush, Beneil |  | Dariush, Beneil | Lightweight | Iran |
| Davis, Alexis |  | Davis, Alexis | Flyweight (W) | Canada |
| Davis, Brandon |  | Davis, Brandon | Featherweight | USA |
| Davis, Mike |  | Davis, Mike | Lightweight | USA |
| Dawodu, Hakeem |  | Dawodu, Hakeem | Featherweight | Canada |
| Dawson, Grant |  | Dawson, Grant | Lightweight | USA |
| Day, Martin |  | Day, Martin | Bantamweight (M) | USA |
| Dern, Mackenzie |  | Dern, Mackenzie | Strawweight | USA |
| Diakiese, Marc |  | Diakiese, Marc | Lightweight | UK |
| Diaz, Nate |  | Diaz, Nate | Lightweight | USA |
| Diaz, Nick |  | Diaz, Nick | Welterweight | USA |
| Juan Francisco Espino Dieppa |  | Juan Francisco Espino Dieppa | Heavyweight | Spain |
| Dillashaw, T.J |  | Dillashaw, T.J | Bantamweight (M) | USA |
| Dober, Drew |  | Dober, Drew | Lightweight | USA |
| Dobson, Shana |  | Dobson, Shana | Flyweight (W) | USA |
| Dodson, John |  | Dodson, John | Bantamweight (M) | USA |
| Dolidze, Roman |  | Dolidze, Roman | Light Heavyweight | Georgia |
| Dollaway, C.B |  | Dollaway, C.B | Middleweight | USA |
| Duffee, Todd |  | Duffee, Todd | Heavyweight | USA |
| Duffy, Joe |  | Duffy, Joe | Lightweight | Ireland |
| Dunham, Evan |  | Dunham, Evan | Lightweight | USA |
| Duquesnoy, Tom |  | Duquesnoy, Tom | Bantamweight (M) | France |
| Dvalishvili, Merab |  | Dvalishvili, Merab | Bantamweight (M) | Georgia |
| Dy, Rolando |  | Dy, Rolando | Featherweight | Philippines |
| Edgar, Frankie |  | Edgar, Frankie | Featherweight | USA |
| Eduardo, Johnny |  | Eduardo, Johnny | Bantamweight (M) | Brazil |
| Edwards, Leon |  | Edwards, Leon | Welterweight | UK |
| Edwards, Te'Jovan |  | Edwards, Te'Jovan | Lightweight | USA |
| Elkins, Darren |  | Elkins, Darren | Featherweight | USA |
| Ellenberger, Jake |  | Ellenberger, Jake | Welterweight | USA |
| Elliott, Tim |  | Elliott, Tim | Flyweight (M) | USA |
| Emeev, Ramazan |  | Emeev, Ramazan | Welterweight | Russia |
| Emmett, Josh |  | Emmett, Josh | Featherweight | USA |
| Erosa, Julian |  | Erosa, Julian | Featherweight | USA |
| Esparza, Carla |  | Esparza, Carla | Strawweight | USA |
| Espinosa, Jordan |  | Espinosa, Jordan | Flyweight (M) | USA |
| Esquibel, Jodie |  | Esquibel, Jodie | Strawweight | USA |
| Eubanks, Sijara |  | Eubanks, Sijara | Bantamweight (W) | USA |
| Evans, Rashad |  | Evans, Rashad | Light Heavyweight | USA |
| Evans-Smith, Ashlee |  | Evans-Smith, Ashlee | Flyweight (W) | USA |
| Evinger, Tonya |  | Evinger, Tonya | Bantamweight (W) | USA |
| Evloev, Movsar |  | Evloev, Movsar | Featherweight | Russia |
| Ewell, Andre |  | Ewell, Andre | Bantamweight (M) | USA |
| Eye, Jessica |  | Eye, Jessica | Flyweight (W) | USA |
| Faber, Urijah |  | Faber, Urijah | Bantamweight (M) | USA |
| Fabinski, Bartosz |  | Fabinski, Bartosz | Welterweight | Poland |
| Faria, Kalindra |  | Faria, Kalindra | Flyweight (W) | Brazil |
| Felder, Paul |  | Felder, Paul | Lightweight | USA |
| Ferguson, Tony |  | Ferguson, Tony | Lightweight | USA |
| Ferreira, Carlos Diego |  | Ferreira, Carlos Diego | Lightweight | Brazil |
| Ferreira, Cezar |  | Ferreira, Cezar | Middleweight | Brazil |
| Figueiredo, Deiveson |  | Figueiredo, Deiveson | Flyweight (M) | Brazil |
| Fili, Andre |  | Fili, Andre | Featherweight | USA |
| Fishgold, Chris |  | Fishgold, Chris | Featherweight | UK |
| Fiziev, Rafael |  | Fiziev, Rafael | Lightweight | Kyrgyzstan |
| Font, Rob |  | Font, Rob | Bantamweight (M) | USA |
| Formiga (Da Silva), Jussier |  | Formiga (Da Silva), Jussier | Flyweight (M) | Brazil |
| Freitas, Geraldo De |  | Freitas, Geraldo De | Featherweight | Brazil |
| Frevola, Matt |  | Frevola, Matt | Lightweight | USA |
| Gadelha, Claudia |  | Gadelha, Claudia | Strawweight | Brazil |
| Gaethje, Justin |  | Gaethje, Justin | Lightweight | USA |
| Gagnon, Mitch |  | Gagnon, Mitch | Bantamweight (M) | Canada |
| Gall, Mickey |  | Gall, Mickey | Welterweight | USA |
| Gane, Ciryl |  | Gane, Ciryl | Heavyweight | France |
| Garagorri, Luiz |  | Garagorri, Luiz | Featherweight | Uruguay |
| Garbrandt, Cody |  | Garbrandt, Cody | Bantamweight (M) | USA |
| Garcia, Elias |  | Garcia, Elias | Flyweight (M) | USA |
| Gastelum, Kelvin |  | Gastelum, Kelvin | Middleweight | USA |
| Gatto, Melissa |  | Gatto, Melissa | Bantamweight (W) | Brazil |
| Giagos, Christos |  | Giagos, Christos | Lightweight | USA |
| Gifford, Thomas |  | Gifford, Thomas | Lightweight | USA |
| Giglio, Sergio |  | Giglio, Sergio | Featherweight | Peru |
| Giles, Trevin |  | Giles, Trevin | Middleweight | USA |
| Gillespie, Gregor |  | Gillespie, Gregor | Lightweight | USA |
| Glenn, Rick |  | Glenn, Rick | Featherweight | USA |
| Goldy, Hannah |  | Goldy, Hannah | Flyweight (W) | USA |
| Gonzalez, Jason |  | Gonzalez, Jason | Lightweight | USA |
| Good, Lyman |  | Good, Lyman | Welterweight | USA |
| Gordon, Jared |  | Gordon, Jared | Lightweight | USA |
| Gorgees, Alex |  | Gorgees, Alex | Lightweight | Australia |
| Gouti, Thibault |  | Gouti, Thibault | Lightweight | France |
| Gracie, Kron |  | Gracie, Kron | Featherweight | Brazil |
| Granger, Miranda |  | Granger, Miranda | Flyweight (W) | USA |
 | | Grant, Davey | Bantamweight (M) | UK |
| Grant, Dwight |  | Grant, Dwight | Welterweight | USA |
 | | Grasso, Alexa | Strawweight | Mexico |
| Green, Bobby |  | Green, Bobby | Lightweight | USA |
| Green, Desmond |  | Green, Desmond | Lightweight | USA |
| Greene, Maurice |  | Greene, Maurice | Heavyweight | USA |
| Griffin, Jordan |  | Griffin, Jordan | Featherweight | USA |
| Griffin, Max |  | Griffin, Max | Welterweight | USA |
| Gruetzemacher, Chis |  | Gruetzemacher, Chis | Lightweight | USA |
| Grundy, Mike |  | Grundy, Mike | Featherweight | UK |
| Guan, Wang |  | Guan, Wang | Featherweight | China |
| Guida, Clay |  | Guida, Clay | Lightweight | USA |
| Gunther, John |  | Gunther, John | Lightweight | USA |
| Gustafsson, Alexander |  | Gustafsson, Alexander | Light Heavyweight | Sweden |
| Gutierrez, Chris |  | Gutierrez, Chris | Bantamweight (M) | USA |
| Hadzovic, Damir |  | Hadzovic, Damir | Lightweight | Bosnia |
| Hall, Ryan |  | Hall, Ryan | Featherweight | USA |
| Hall, Uriah |  | Hall, Uriah | Middleweight | Jamaica |
| Haqparast, Nasrat |  | Haqparast, Nasrat | Lightweight | Afghanistan |
| Hardy, Greg |  | Hardy, Greg | Heavyweight | USA |
| Harris, Walt |  | Harris, Walt | Heavyweight | USA |
| Hein, Nick |  | Hein, Nick | Lightweight | Germany |
| Heinisch, Ian |  | Heinisch, Ian | Middleweight | USA |
| Hendricks, Johny |  | Hendricks, Johny | Middleweight | USA |
| Herman, Ed |  | Herman, Ed | Light Heavyweight | USA |
| Henry, Danny |  | Henry, Danny | Featherweight | UK |
| Hermansson, Jack |  | Hermansson, Jack | Middleweight | Sweden |
| Hernandez, Alexander |  | Hernandez, Alexander | Lightweight | USA |
| Hernandez, Anthony |  | Hernandez, Anthony | Middleweight | USA |
| Hernandez, Nohelin |  | Hernandez, Nohelin | Bantamweight (M) | USA |
| Herrig, Felice |  | Herrig, Felice | Strawweight | USA |
| Hill Angela |  | Hill Angela | Strawweight | USA |
| Hill, Jamahal |  | Hill, Jamahal | Light Heavyweight | USA |
| Hirota, Mizuto |  | Hirota, Mizuto | Lightweight | Japan |
| Holland, Kevin |  | Holland, Kevin | Middleweight | USA |
| Holloway, Max |  | Holloway, Max | Featherweight | USA |
| Holm, Holly |  | Holm, Holly | Bantamweight (W) | USA |
| Holobaugh, Kurt |  | Holobaugh, Kurt | Lightweight | USA |
| Holtzman, Scott |  | Holtzman, Scott | Lightweight | USA |
| Honchak, Barb |  | Honchak, Barb | Flyweight (W) | USA |
| Hooker, Dan |  | Hooker, Dan | Lightweight | New Zealand |
| Horcher, Darrell |  | Horcher, Darrell | Lightweight | USA |
| Horie, Yoshinori |  | Horie, Yoshinori | Featherweight | Japan |
| Hu Yaozong |  | Hu Yaozong | Light Heavyweight | China |
| Huachin, Carlos |  | Huachin, Carlos | Bantamweight (M) | Peru |
| Hubbard, Austin |  | Hubbard, Austin | Lightweight | USA |
| Hughes, Jeff |  | Hughes, Jeff | Heavyweight | USA |
| Hunt, Mark |  | Hunt, Mark | Heavyweight | New Zealand |
| Iaquinta, Al |  | Iaquinta, Al | Lightweight | USA |
| Ibragimov, Khadis |  | Ibragimov, Khadis | Light Heavyweight | USA |
| Ige, Dan |  | Ige, Dan | Featherweight | USA |
| Imadaev, Zelim |  | Imadaev, Zelim | Welterweight | Russia |
| Inoue, Mizuki |  | Inoue, Mizuki | Flyweight (W) | USA |
| Ishihara, Teruto |  | Ishihara, Teruto | Bantamweight (M) | Japan |
| Ismagulov, Damir |  | Ismagulov, Damir | Lightweight | Kazakhstan |
| Ivanov, Blagoy |  | Ivanov, Blagoy | Heavyweight | Bulgaria |
| Jackson, Mike |  | Jackson, Mike | Welterweight | USA |
| Jackson, Montel |  | Jackson, Montel | Bantamweight (M) | USA |
| Jandiroba, Virna |  | Jandiroba, Virna | Strawweight | Brazil |
| Janes, Ryan |  | Janes, Ryan | Middleweight | Canada |
| Jedrzejczyk, Joanna |  | Jedrzejczyk, Joanna | Strawweight & Flyweight | Poland |
| Jingliang, Li |  | Jingliang, Li | Welterweight | China |
| Jo, Sung Bin |  | Jo, Sung Bin | Featherweight | S. Korea |
| Johns, Brett |  | Johns, Brett | Bantamweight (M) | UK |
| Johns, Miles |  | Johns, Miles | Bantamweight (M) | USA |
| Johnson, Jordan |  | Johnson, Jordan | Light Heavyweight | USA |
| Johnson, Michael |  | Johnson, Michael | Lightweight | USA |
| Jojua, Liana |  | Jojua, Liana | Bantamweight (W) | Georgia |
| Jones, Jon |  | Jones, Jon | Light Heavyweight | USA |
| Jotko, Krzysztof |  | Jotko, Krzysztof | Middleweight | Poland |
| Jouban, Alan |  | Jouban, Alan | Welterweight | USA |
| Jourdain, Charles |  | Jourdain, Charles | Lightweight | Canada |
| Jumeau, Luke |  | Jumeau, Luke | Welterweight | New Zealand |
| Jung, Chan Sung |  | Jung, Chan Sung | Featherweight | S. Korea |
| Jung, Da Un |  | Jung, Da Un | Light Heavyweight | S. Korea |
| Kang, Kyung Ho |  | Kang, Kyung Ho | Bantamweight (M) | S. Korea |
| Kara-France, Kai |  | Kara-France, Kai | Flyweight (M) | New Zealand |
| Kassem, Nadia |  | Kassem, Nadia | Strawweight | Australia |
| Katona, Brad |  | Katona, Brad | Featherweight | Canada |
| Kattar, Calvin |  | Kattar, Calvin | Featherweight | USA |
| Kelleher, Brian |  | Kelleher, Brian | Bantamweight (M) | USA |
| Kelly, Daniel |  | Kelly, Daniel | Middleweight | Australia |
| Kenney, Casey |  | Kenney, Casey | Bantamweight (M) | USA |
| Khabilov, Rustam |  | Khabilov, Rustam | Lightweight | Russia |
| Khandare, Bharat |  | Khandare, Bharat | Bantamweight (M) | India |
| Khandozhko, Sergey |  | Khandozhko, Sergey | Welterweight | Brazil |
| Kianzad, Pannie |  | Kianzad, Pannie | Bantamweight (W) | Sweden |
| Kim, Dong Hyun (Maestro) |  | Kim, Dong Hyun (Maestro) | Lightweight | S. Korea |
| Kim, Ji Yeon |  | Kim, Ji Yeon | Flyweight (W) | S. Korea |
| Kish, Justine |  | Kish, Justine | Flyweight (W) | Russia |
| Klose, Drakkar |  | Klose, Drakkar | Lightweight | USA |
| Koch, Erik |  | Koch, Erik | Welterweight | USA |
 | | Kondo, Syuri | Strawweight | Japan |
| Kopylov, Roman |  | Kopylov, Roman | Middleweight | Russia |
| Kowalkiewicz, Karolina |  | Kowalkiewicz, Karolina | Strawweight | Poland |
| Krantz, Derrick |  | Krantz, Derrick | | USA |
| Krause, James |  | Krause, James | Welterweight | USA |
| Krylov, Nikita |  | Krylov, Nikita | Light Heavyweight | Ukraine |
| Kunchenko, Alexey |  | Kunchenko, Alexey | Welterweight | Russia |
| Kunitskaya, Yana |  | Kunitskaya, Yana | Bantamweight (W) | Russia |
| Ladd, Aspen |  | Ladd, Aspen | Bantamweight (W) | USA |
| LaFlare, Ryan |  | LaFlare, Ryan | Welterweight | USA |
| Lamas, Ricardo |  | Lamas, Ricardo | Featherweight | USA |
 | | Lansberg, Lina | Bantamweight (W) | Sweden |
| Laprise, Chad |  | Laprise, Chad | Welterweight | Canada |
| Latifi, Ilir |  | Latifi, Ilir | Light Heavyweight | Sweden |
| Lauzon, Joe |  | Lauzon, Joe | Lightweight | USA |
| Lawler, Robbie |  | Lawler, Robbie | Welterweight | USA |
| Ledet, Justin |  | Ledet, Justin | Light Heavyweight | USA |
 |  | Lee, Andrea | Flyweight (W) | USA |
| Lee, Kevin |  | Lee, Kevin | Welterweight | USA |
| Leites, Thales |  | Leites, Thales | Middleweight | Brazil |
| Lemos, Giacomo |  | Lemos, Giacomo | Heavyweight | Brazil |
| Lentz, Nik |  | Lentz, Nik | Lightweight | USA |
| Letson, Leah |  | Letson, Leah | Bantamweight (W) | USA |
| Lewis, Bevon |  | Lewis, Bevon | Middleweight | USA |
| Lewis, Derrick |  | Lewis, Derrick | Heavyweight | USA |
| Lima, Marcos Rogerio De |  | Lima, Marcos Rogerio De | Heavyweight | Brazil |
| Lima, Dhiego |  | Lima, Dhiego | Welterweight | Brazil |
| Lipski, Ariane |  | Lipski, Ariane | Flyweight (W) | Brazil |
| Liu, Pingyuan |  | Liu, Pingyuan | Bantamweight (M) | China |
| Lombard, Hector |  | Lombard, Hector | Middleweight | Cuba |
| Lopez, Benito |  | Lopez, Benito | Bantamweight (M) | USA |
| Lopez, Matthew |  | Lopez, Matthew | Bantamweight (M) | USA |
| Lu, Zhenhong |  | Lu, Zhenhong | Featherweight | China |
 | | Luque, Vicente | Welterweight | USA |
| Lungiambula, Dalcha |  | Lungiambula, Dalcha | Light Heavyweight | D.R. Congo |
| MacDonald, Ryan |  | MacDonald, Ryan | Bantamweight (M) | USA |
 | | Macedo, Veronica | Flyweight (W) | Venezuela |
 | | Madge, Don | Lightweight | S. Africa |
| Madsen, Mark |  | Madsen, Mark | Lightweight | Denmark |
| Magny, Neil |  | Magny, Neil | Welterweight | USA |
| Magomedov, Ruslan |  | Magomedov, Ruslan | Heavyweight | Russia |
| Magomedsharipov, Zabit |  | Magomedsharipov, Zabit | Featherweight | Russia |
| Maia, Demian |  | Maia, Demian | Welterweight | Brazil |
| Maia, Jennifer |  | Maia, Jennifer | Flyweight (W) | Brazil |
| Makdessi, John |  | Makdessi, John | Lightweight | Canada |
| Makhachev, Islam |  | Makhachev, Islam | Lightweight | Russia |
| Malecki, Bea |  | Malecki, Bea | Featherweight (W) | Sweden |
| Manuwa, Jimi |  | Manuwa, Jimi | Light Heavyweight | UK |
| Markos, Randa |  | Markos, Randa | Strawweight | Iraq |
| Marquardt, Nate |  | Marquardt, Nate | Middleweight | USA |
| Marquez, Julian |  | Marquez, Julian | Middleweight | USA |
| Marshman, Jack |  | Marshman, Jack | Middleweight | UK |
| Martin, Anthony |  | Martin, Anthony | Welterweight | USA |
| Martinez, Jonathan |  | Martinez, Jonathan | Bantamweight (M) | USA |
| Masvidal, Jorge |  | Masvidal, Jorge | Welterweight | USA |
| Matthews, Jake |  | Matthews, Jake | Welterweight | Australia |
| Mayes, Don'Tale |  | Mayes, Don'Tale | Heavyweight | USA |
| Maynard, Gray |  | Maynard, Gray | Lightweight | USA |
| Mazany, Gina |  | Mazany, Gina | Bantamweight (W) | USA |
| Mazo, Sabina |  | Mazo, Sabina | Flyweight (W) | Colombia |
 |  | McCann, Molly | Flyweight (W) | UK |
| McGee, Court |  | McGee, Court | Welterweight | USA |
| McGregor Conor |  | McGregor Conor | Lightweight | Ireland |
| McMann, Sara |  | McMann, Sara | Bantamweight (W) | USA |
| Means, Tim |  | Means, Tim | Welterweight | USA |
| Medeiros, Yancy |  | Medeiros, Yancy | Lightweight | USA |
| Meek, Emil Weber |  | Meek, Emil Weber | Welterweight | Norway |
| Meerschaert, Gerald |  | Meerschaert, Gerald | Middleweight | USA |
| Mein, Jordan |  | Mein, Jordan | Welterweight | Canada |
| Melendez, Gilbert |  | Melendez, Gilbert | Featherweight | USA |
| Mendes, Augusto |  | Mendes, Augusto | Bantamweight (M) | Brazil |
| Mendes, Chad |  | Mendes, Chad | Featherweight | USA |
| Menifield, Alonzo |  | Menifield, Alonzo | Light Heavyweight | USA |
| Millender, Curtis |  | Millender, Curtis | Welterweight | USA |
| Miller, Jim |  | Miller, Jim | Lightweight | USA |
| Milstead, Adam |  | Milstead, Adam | Light Heavyweight | USA |
| Mina, Alberto |  | Mina, Alberto | Welterweight | Brazil |
| Miocic, Stipe |  | Miocic, Stipe | Heavyweight | USA |
| Mitchell, Bryce |  | Mitchell, Bryce | Featherweight | USA |
| Modafferi, Roxanne |  | Modafferi, Roxanne | Flyweight (W) | USA |
| Moffett, Bobby |  | Moffett, Bobby | Featherweight | USA |
| Moises, Thiago |  | Moises, Thiago | Lightweight | Brazil |
| Mokhtarian Ashkan |  | Mokhtarian Ashkan | Flyweight (M) | Iran |
| Mokhtarian, Suman |  | Mokhtarian, Suman | Featherweight | Australia |
| Montano, Nicco |  | Montano, Nicco | Bantamweight (W) | USA |
| Moraes, Marlon |  | Moraes, Marlon | Bantamweight (M) | Brazil |
| Moraes, Sergio |  | Moraes, Sergio | Welterweight | Brazil |
| Moraes, Sheymon |  | Moraes, Sheymon | Featherweight | Brazil |
| Morales, Joseph |  | Morales, Joseph | Flyweight (M) | USA |
| Morales, Vince |  | Morales, Vince | Bantamweight (M) | USA |
| Moras, Sarah |  | Moras, Sarah | Bantamweight (W) | Canada |
| Moreira, Vinicius |  | Moreira, Vinicius | Light Heavyweight | Brazil |
| Moreno, Brandon |  | Moreno, Brandon | Flyweight (M) | Mexico |
 |  | Moret, Dan | Lightweight | USA |
| Morono, Alex |  | Morono, Alex | Welterweight | USA |
| Moroz, Maryna |  | Moroz, Maryna | Flyweight (W) | Ukraine |
| Mueller, Lauren |  | Mueller, Lauren | Flyweight (W) | USA |
| Muhammad, Belal |  | Muhammad, Belal | Welterweight | USA |
| Mullarkey, Jamie |  | Mullarkey, Jamie | Lightweight | Australia |
| Munhoz, Pedro |  | Munhoz, Pedro | Bantamweight (M) | Brazil |
| Muradov, Makhmud |  | Muradov, Makhmud | Middleweight | Uzbekistan |
| Murdock, Vince |  | Murdock, Vince | Featherweight | USA |
| Murphy, Lauren |  | Murphy, Lauren | Flyweight (W) | USA |
| Murphy, Lerone |  | Murphy, Lerone | Featherweight | UK |
| Murtazaliev, Khalid |  | Murtazaliev, Khalid | Middleweight | Russia |
| Mustafaev, Magomed |  | Mustafaev, Magomed | Lightweight | Russia |
| Nakamura, Keita |  | Nakamura, Keita | Welterweight | Japan |
| Nam, Tyson |  | Nam, Tyson | Flyweight (M) | USA |
| Namajunas, Rose |  | Namajunas, Rose | Strawweight | USA |
| Nad Narimani |  | Nad Narimani | Featherweight | UK |
| Naurdiev, Ismail |  | Naurdiev, Ismail | Welterweight | Austria |
| Neal, Geoff |  | Neal, Geoff | Welterweight | USA |
| Negumereanu, Nick |  | Negumereanu, Nick | Light Heavyweight | Romania |
 | | Nelson, Gunnar | Welterweight | Iceland |
| Nelson, Kyle |  | Nelson, Kyle | Lightweight | Canada |
| Neto, Antonio Braga |  | Neto, Antonio Braga | Middleweight | Brazil |
| Newson, Journey |  | Newson, Journey | Bantamweight (M) | USA |
| Ngannou, Francis |  | Ngannou, Francis | Heavyweight | France |
| Nogueira, Antonio Rogerio |  | Nogueira, Antonio Rogerio | Light Heavyweight | Brazil |
| Nunes, Amanda |  | Nunes, Amanda | Bantamweight (W) & Featherweight (W) | Brazil |
| Nunes, Istela |  | Nunes, Istela | Strawweight | Brazil |
| Nurmagomedov, Khabib |  | Nurmagomedov, Khabib | Lightweight | Russia |
| Nurmagomedov, Said |  | Nurmagomedov, Said | Flyweight (M) | Russia |
| Nzechukwu, Kennedy |  | Nzechukwu, Kennedy | Light Heavyweight | Nigeria |
| Oezdemir, Volkan |  | Oezdemir, Volkan | Light Heavyweight | Switzerland |
| Oleksiejczuk, Michal |  | Oleksiejczuk, Michal | Light Heavyweight | Poland |
| Oleynik, Alexey |  | Oleynik, Alexey | Heavyweight | Russia |
| Oliveira, Alex |  | Oliveira, Alex | Welterweight | Brazil |
| Oliveira, Charles |  | Oliveira, Charles | Lightweight | Brazil |
| O'Malley, Sean |  | O'Malley, Sean | Bantamweight (M) | USA |
| Ortega, Brian |  | Ortega, Brian | Featherweight | USA |
| Ostovich, Rachael |  | Ostovich, Rachael | Flyweight (W) | USA |
| Ottow, Zak |  | Ottow, Zak | Welterweight | USA |
| Overeem, Alistair |  | Overeem, Alistair | Heavyweight | Netherlands |
| Packalen, Teemu |  | Packalen, Teemu | Lightweight | Finland |
| Paiva, Raulian |  | Paiva, Raulian | Flyweight (M) | Brazil |
| Pantoja, Alexandre |  | Pantoja, Alexandre | Flyweight (M) | Brazil |
| Park, Jun Yong |  | Park, Jun Yong | Middleweight | S. Korea |
| Patrick, Alan |  | Patrick, Alan | Lightweight | Brazil |
| Pavlovich, Sergey |  | Pavlovich, Sergey | Heavyweight | Russia |
| Pearce, Jonathan |  | Pearce, Jonathan | Lightweight | USA |
| Pearson, Ross |  | Pearson, Ross | Lightweight | UK |
| Pedro, Tyson |  | Pedro, Tyson | Light Heavyweight | Australia |
| Pena, Julianna |  | Pena, Julianna | Bantamweight (W) | USA |
| Pena, Luis |  | Pena, Luis | Lightweight | USA |
| Penn, BJ |  | Penn, BJ | Lightweight | USA |
| Penne, Jessica |  | Penne, Jessica | Strawweight | USA |
| Pennington, Raquel |  | Pennington, Raquel | Bantamweight (W) | USA |
| Pereira, Michel |  | Pereira, Michel | Welterweight | Brazil |
| Perez, Alejandro |  | Perez, Alejandro | Bantamweight (M) | Mexico |
| Perez, Alex |  | Perez, Alex | Flyweight (M) | USA |
| Perez, Markus |  | Perez, Markus | Middleweight | Brazil |
| Perry, Mike |  | Perry, Mike | Welterweight | USA |
| Pessoa, Raphael |  | Pessoa, Raphael | Heavyweight | Brazil |
| Peterson, Steven |  | Peterson, Steven | Featherweight | USA |
| Pettis, Anthony |  | Pettis, Anthony | Welterweight | USA |
| Pettis, Sergio |  | Pettis, Sergio | Flyweight (M) | USA |
| Phillips, John |  | Phillips, John | Middleweight | UK |
| Phillips, Kyler |  | Phillips, Kyler | Bantamweight (M) | USA |
| Pichel, Vinc |  | Pichel, Vinc | Lightweight | USA |
| Piechota, Oskar |  | Piechota, Oskar | Middleweight | Poland |
| Pilarte, Domingo |  | Pilarte, Domingo | Bantamweight (M) | USA |
| Poirier, Dustin |  | Poirier, Dustin | Lightweight | USA |
| Ponzinibbio, Santiago |  | Ponzinibbio, Santiago | Welterweight | Argentina |
| Popov, Grigory |  | Popov, Grigory | Bantamweight (M) | Russia |
| Potter, Callan |  | Potter, Callan | Welterweight | Australia |
| Powell, Devin |  | Powell, Devin | Lightweight | USA |
| Prachnio, Marcin |  | Prachnio, Marcin | Light Heavyweight | Poland |
| Prazeres, Michel |  | Prazeres, Michel | Welterweight | Brazil |
| Prepolec, Kyle |  | Prepolec, Kyle | Lightweight | Canada |
| Price, Niko |  | Price, Niko | Welterweight | USA |
| Procopio, Lara |  | Procopio, Lara | Bantamweight (W) | Brazil |
| Pudilova, Lucie |  | Pudilova, Lucie | Bantamweight (W) | Czech Republic |
 | | Puelles, Claudio | Lightweight | Peru |
| Pyle, Mike |  | Pyle, Mike | Welterweight | USA |
| Quinonez, Jose |  | Quinonez, Jose | Bantamweight (M) | Mexico |
 |  | Rainey, Ricky | Welterweight | USA |
| Ramos, Davi |  | Ramos, Davi | Lightweight | Brazil |
| Randamie, Germaine De |  | Randamie, Germaine De | Bantamweight (W) | Netherlands |
| Ray, Steven |  | Ray, Steven | Lightweight | UK |
| Rencountre, Chance |  | Rencountre, Chance | Welterweight | USA |
| Reneau, Marion |  | Reneau, Marion | Bantamweight (W) | USA |
| Reyes, Alex |  | Reyes, Alex | Welterweight | USA |
| Reyes, Dominick |  | Reyes, Dominick | Light Heavyweight | USA |
| Reyes, Marco Polo |  | Reyes, Marco Polo | Featherweight | Mexico |
| Ramos, Ricardo |  | Ramos, Ricardo | Bantamweight (M) | Brazil |
| Ribas, Amanda |  | Ribas, Amanda | Strawweight | Brazil |
| Riddell, Brad |  | Riddell, Brad | Lightweight | New Zealand |
| Rivera, Jimmie |  | Rivera, Jimmie | Bantamweight (M) | USA |
| Roberson, Karl |  | Roberson, Karl | Middleweight | USA |
| Roberts, Danny |  | Roberts, Danny | Welterweight | UK |
| Roberts, Roosevelt |  | Roberts, Roosevelt | Lightweight | USA |
 |  | Robertson, Gillian | Flyweight (W) | Canada |
| Rocha, Chris De La |  | Rocha, Chris De La | Heavyweight | USA |
| Rockhold, Luke |  | Rockhold, Luke | Light Heavyweight | USA |
| Rodriguez, Marina |  | Rodriguez, Marina | Strawweight | Brazil |
| Rodriguez, Mike |  | Rodriguez, Mike | Light Heavyweight | USA |
| Rodriguez, Yair |  | Rodriguez, Yair | Featherweight | Mexico |
| Romero, Yoel |  | Romero, Yoel | Middleweight | Cuba |
| Rosa, Charles |  | Rosa, Charles | Featherweight | USA |
| Rosa, Marcos Mariano |  | Rosa, Marcos Mariano | Lightweight | Brazil |
| Rosa, Mark De La |  | Rosa, Mark De La | Flyweight (M) | USA |
| Rothwell, Ben |  | Rothwell, Ben | Heavyweight | USA |
| Rountree, Khalil |  | Rountree, Khalil | Light Heavyweight | USA |
| Rozenstruik, Jairzinho |  | Rozenstruik, Jairzinho | Heavyweight | Suriname |
 | | Rua, Mauricio | Light Heavyweight | Brazil |
| Saenz, Frankie |  | Saenz, Frankie | Bantamweight (M) | USA |
| Sakai, Augusto |  | Sakai, Augusto | Heavyweight | Brazil |
| Safarov, Saparbek |  | Safarov, Saparbek | Light Heavyweight | Russia |
| Saki, Gokhan |  | Saki, Gokhan | Light Heavyweight | Netherlands/Turkey |
| Salikhov, Muslim |  | Salikhov, Muslim | Welterweight | Russia |
| Salmon, Boston |  | Salmon, Boston | Bantamweight (M) | USA |
| Sanchez, Andrew |  | Sanchez, Andrew | Middleweight | USA |
| Sanchez, Diego |  | Sanchez, Diego | Welterweight | USA |
| Sanchez, Joby |  | Sanchez, Joby | Bantamweight (M) | USA |
| Sanders, Luke |  | Sanders, Luke | Bantamweight (M) | USA |
| Sandhagen, Cory |  | Sandhagen, Cory | Bantamweight (M) | USA |
| Santana, Duda |  | Santana, Duda | Featherweight (W) | Brazil |
| Santos, Anderson Dos |  | Santos, Anderson Dos | Bantamweight | Brazil |
| Santos, Elizeu Zaleski Dos |  | Santos, Elizeu Zaleski Dos | Welterweight | Brazil |
| Santos, Junior Dos |  | Santos, Junior Dos | Heavyweight | Brazil |
| Santos, Leonardo |  | Santos, Leonardo | Lightweight | Brazil |
| Santos, Taila |  | Santos, Taila | Flyweight (W) | Brazil |
| Santos, Thiago |  | Santos, Thiago | Light Heavyweight | Brazil |
| Santos, Farah Zairn Dos |  | Santos, Farah Zairn Dos | Featherweight (W) | France |
| Sato, Takashi |  | Sato, Takashi | Welterweight | Japan |
| Saunders, Ben |  | Saunders, Ben | Welterweight | USA |
| Sayles, Matt |  | Sayles, Matt | Featherweight | USA |
| Schnell, Matt |  | Schnell, Matt | Flyweight (M) | USA |
| Scott, Bradley |  | Scott, Bradley | Welterweight | UK |
| Sekulic, Stefan |  | Sekulic, Stefan | Welterweight | Serbia |
| Shahbazyan, Edmen |  | Shahbazyan, Edmen | Middleweight | USA |
| Shevchenko, Antonina |  | Shevchenko, Antonina | Flyweight (W) | Kyrgyzstan |
| Shevchenko, Valentina |  | Shevchenko, Valentina | Flyweight (W) | Kyrgyzstan |
| Shore, Jack |  | Shore, Jack | Bantamweight (M) | UK |
| Silva, Alex Da |  | Silva, Alex Da | Lightweight | Brazil |
| Silva, Anderson |  | Silva, Anderson | Middleweight | Brazil |
| Silva, Bruno |  | Silva, Bruno | Middleweight | Brazil |
| Silva, Bruno Gustavo |  | Silva, Bruno Gustavo | Bantamweight (M) | Brazil |
| Silva, Claudio Henrique Da |  | Silva, Claudio Henrique Da | Welterweight | Brazil |
| Silva, Gabriel |  | Silva, Gabriel | Bantamweight (M) | Brazil |
| Silva, Joaquim |  | Silva, Joaquim | Lightweight | Brazil |
| Silva, Mayra Bueno |  | Silva, Mayra Bueno | Flyweight (W) | Brazil |
 |  | Simon, Ricky | Bantamweight (M) | USA |
| Skelly, Chas |  | Skelly, Chas | Featherweight | USA |
| Smith, Anthony |  | Smith, Anthony | Light Heavyweight | USA |
| Smith, Cole |  | Smith, Cole | Bantamweight (M) | USA |
| Smith, Devonte |  | Smith, Devonte | Lightweight | USA |
 | | Smith, Trevor | Middleweight | USA |
| Smolka, Louis |  | Smolka, Louis | Flyweight (M) | USA |
| Sobotta, Peter |  | Sobotta, Peter | Middleweight | Poland |
| Son, Jin Soo |  | Son, Jin Soo | Bantamweight (M) | S. Korea |
| Song, Kenan |  | Song, Kenan | Welterweight | China |
| Song, Yadong |  | Song, Yadong | Bantamweight (M) | China |
| Soriano, Punahele |  | Soriano, Punahele | Middleweight | USA |
| Sosnovskiy, Dmitry |  | Sosnovskiy, Dmitry | Heavyweight | Russia |
| Soukhamthath, Andre |  | Soukhamthath, Andre | Bantamweight (M) | USA |
| Souza, Livia |  | Souza, Livia | Strawweight | Brazil |
| Souza, Ronaldo |  | Souza, Ronaldo | Middleweight | Brazil |
| Spann, Ryan |  | Spann, Ryan | Light Heavyweight | USA |
| Spencer, Felicia |  | Spencer, Felicia | Featherweight (W) | Canada |
| Spitz, Daniel |  | Spitz, Daniel | Heavyweight | USA |
| Spivak, Sergey |  | Spivak, Sergey | Heavyweight | Ukraine |
| St. Pierre, Georges |  | St. Pierre, Georges | Welterweight | Canada |
| St. Preux, Ovince |  | St. Preux, Ovince | Light Heavyweight | USA |
| Stamann, Cody |  | Stamann, Cody | Bantamweight (M) | USA |
| Staropoli, Laureano |  | Staropoli, Laureano | Welterweight | Argentina |
| Stephens, Jeremy |  | Stephens, Jeremy | Featherweight | USA |
| Sterling, Aljamain |  | Sterling, Aljamain | Bantamweight (M) | USA |
| Stevenson, Maia |  | Stevenson, Maia | Strawweight | USA |
| Stewart, Darren |  | Stewart, Darren | Middleweight | UK |
| Stewart, Kyle |  | Stewart, Kyle | Welterweight | USA |
| Stosic, Darko |  | Stosic, Darko | Light Heavyweight | Serbia |
| Strickland, Sean |  | Strickland, Sean | Welterweight | USA |
| Struve, Stefan |  | Struve, Stefan | Heavyweight | Netherlands |
| Suarez, Tatiana |  | Suarez, Tatiana | Strawweight | USA |
| Sumudaerji, Sumudaerji |  | Sumudaerji, Sumudaerji | Bantamweight (M) | China |
| Suphisara, Konklak |  | Suphisara, Konklak | Strawweight | Thailand |
| Swanson, Cub |  | Swanson, Cub | Featherweight | USA |
| Tafa, Justin |  | Tafa, Justin | Heavyweight | New Zealand |
| Taha, Khalid |  | Taha, Khalid | Featherweight | Germany |
| Taisumov, Mairbek |  | Taisumov, Mairbek | Lightweight | Russia |
| Taleb, Nordine |  | Taleb, Nordine | Welterweight | Canada |
| Tavares, Brad |  | Tavares, Brad | Middleweight | USA |
| Teixeira, Glover |  | Teixeira, Glover | Light Heavyweight | Brazil |
| Teymur, Daniel |  | Teymur, Daniel | Featherweight | Sweden |
| Teymur, David |  | Teymur, David | Lightweight | Sweden |
| Thompson, Stephen |  | Thompson, Stephen | Welterweight | USA |
| Till, Darren |  | Till, Darren | Middleweight | UK |
| Torres, Tecia |  | Torres, Tecia | Strawweight | USA |
 | | Touahri, Salim | Welterweight | Poland |
| Townsend, Dequan |  | Townsend, Dequan | Light Heavyweight | USA |
| Trinaldo, Francisco |  | Trinaldo, Francisco | Lightweight | Brazil |
| Trizano, Mike |  | Trizano, Mike | Lightweight | USA |
| Trujillo, Abel |  | Trujillo, Abel | Lightweight | USA |
| Tsarukyan, Arman |  | Tsarukyan, Arman | Lightweight | Russia |
| Tucker, Gavin |  | Tucker, Gavin | Featherweight | Canada |
| Tuivasa, Tai |  | Tuivasa, Tai | Heavyweight | Australia |
| Tukhugov, Zubaira |  | Tukhugov, Zubaira | Featherweight | Russia |
| Turman, Wellington |  | Turman, Wellington | Middleweight | Brazil |
| Turner, Jalin |  | Turner, Jalin | Lightweight | USA |
| Tybura, Marcin |  | Tybura, Marcin | Heavyweight | Poland |
| Usman, Kamaru |  | Usman, Kamaru | Welterweight | Nigeria |
| Vannata, Lando |  | Vannata, Lando | Lightweight | USA |
| VanZant, Paige |  | VanZant, Paige | Flyweight (W) | USA |
| Vargas, Rodrigo |  | Vargas, Rodrigo | Lightweight | Brazil |
| Velasquez, Cain |  | Velasquez, Cain | Heavyweight | USA |
| Vendramini, Luigi |  | Vendramini, Luigi | Welterweight | Brazil |
| Vera, Marlon |  | Vera, Marlon | Bantamweight (M) | Ecuador |
| Vettori, Marvin |  | Vettori, Marvin | Middleweight | Italy |
| Viana, Polyana |  | Viana, Polyana | Strawweight | Brazil |
| Vick, James |  | Vick, James | Welterweight | USA |
| Vieira, Ketlen |  | Vieira, Ketlen | Bantamweight (W) | Brazil |
| Vieira, Rodolfo |  | Vieira, Rodolfo | Middleweight | Brazil |
| Villante, Gian |  | Villante, Gian | Light Heavyweight | USA |
| Volkanovski, Alexander |  | Volkanovski, Alexander | Featherweight | Australia |
| Volkov, Alexander |  | Volkov, Alexander | Heavyweight | Russia |
| Walker, Johnny |  | Walker, Johnny | Light Heavyweight | Brazil |
| Waterson, Michelle |  | Waterson, Michelle | Strawweight | USA |
| Weaver, Brok |  | Weaver, Brok | Lightweight | USA |
| Weidman, Chris |  | Weidman, Chris | Light Heavyweight | USA |
| Werdum, Fabricio |  | Werdum, Fabricio | Heavyweight | Brazil |
| White, Alex |  | White, Alex | Lightweight | USA |
| Emily Whitmire |  | Emily Whitmire | Strawweight | USA |
| Whittaker, Robert |  | Whittaker, Robert | Middleweight | Australia |
| Wieczorek, Adam |  | Wieczorek, Adam | Heavyweight | Poland |
| Williams, Cole |  | Williams, Cole | Welterweight | USA |
| Williams, Patrick |  | Williams, Patrick | Bantamweight (M) | USA |
| Wiman, Matt |  | Wiman, Matt | Lightweight | USA |
| Wineland, Eddie |  | Wineland, Eddie | Bantamweight (M) | USA |
| Winn, Deron |  | Winn, Deron | Middleweight | USA |
| Wisely, Eric |  | Wisely, Eric | Lightweight | USA |
| Wood, Nathaniel |  | Wood, Nathaniel | Bantamweight (M) | UK |
| Woodson, Sean |  | Woodson, Sean | Featherweight | USA |
| Woodley, Tyron |  | Woodley, Tyron | Welterweight | USA |
| Worthy, Khama |  | Worthy, Khama | Lightweight | USA |
| Wu, Yanan |  | Wu, Yanan | Flyweight (W) | China |
| Yahya, Rani |  | Yahya, Rani | Bantamweight (M) | Brazil |
| Yakovlev, Alexander |  | Yakovlev, Alexander | Lightweight | Russia |
| Yan, Petr |  | Yan, Petr | Bantamweight (M) | Russia |
| Yan, Xiaonan |  | Yan, Xiaonan | Strawweight | China |
| Yandiev, Adam |  | Yandiev, Adam | Middleweight | Russia |
| Yoder, Ashley |  | Yoder, Ashley | Strawweight | USA |
| Young, Shane |  | Young, Shane | Featherweight | New Zealand |
| Yusuff, Sodiq |  | Yusuff, Sodiq | Featherweight | Nigeria |
| Zahabi, Aiemann |  | Zahabi, Aiemann | Bantamweight (M) | Canada |
| Zawada, David |  | Zawada, David | Welterweight | Germany |
| Zhang, Weili |  | Zhang, Weili | Strawweight | China |
| Ziam, Fares |  | Ziam, Fares | Lightweight | France |
| Zuniga, Allan |  | Zuniga, Allan | Lightweight | Costa Rica |