"Abrek"

Shamil Abdurakhimov

Heavyweight

20-4-0 (W-L-D)

"Demente"

Ricardo Abreu

Middleweight

5-1-0 (W-L-D)

"White Bear"

Klidson Abreu

Light Heavyweight

15-3-0 (W-L-D)

"The Kraken"

Juan Adams

Heavyweight

5-1-0 (W-L-D)

"The Last Stylebender"

Israel Adesanya

Middleweight

17-0-0 (W-L-D)

"Jag"

Jessica Aguilar

Women's Strawweight

20-8-0 (W-L-D)

"Angel of Death"

Kevin Aguilar

Featherweight

17-1-0 (W-L-D)

"Wolverine"

Omari Akhmedov

Middleweight

18-4-1 (W-L-D)

"Sexyama"

Yoshihiro Akiyama

Welterweight

15-6-0 (W-L-D)

Rostem Akman

Welterweight

6-1-0 (W-L-D)

"The Mongolian Knight"

Heili Alateng

Bantamweight

12-7-1 (W-L-D)