Marlon Sandro
- A.J. McKee
- Aaron Pico
- Abdul Razak Alhassan
- Abeku Afful
- Abubakar Nurmagomedov
- ACB
- Adam Hunter
- Adlan Amagov
- Adonis Stevenson
- Agilan Thani
- Aisling Daly
- AJ Agazarm
- AJ McKee
- Akebono
- Akhmed Aliev
- Al Iaquinta
- Alain Ngalani
- Alan Jouban
- Alberto Del Rio
- Alberto Mina
- Aleksandar Rakic
- Aleksandra Albu
- Aleksei Oleinik
- Aleksei Oleinik's
- Alex Caceres
- Alex Hernandez
- Alex Nicholson
- Alex Oliveira
- Alex Perez
- Alex Volkanovski
- Alexa Grasso
- Alexander Emelianenko
- Alexander Gustaffason
- Alexander Gustafsson
- Alexander Ovechkin
- Alexander Romanov
- Alexander Shlemenko
- Alexander Volkov
- Alexandre Almeida
- Alexey Oleynik
- Ali Abdelaziz
- Ali Bagautinov
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- Aljamain Sterling
- Allen Crowder
- Alma Juniku
- Alonzo Menifield
- Alton Cunningham
- Amanda Cooper
- Amanda Nunes
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- Amar Suloev
- American Top Team
- Amir Aliakbari
- Amir Khan
- Anastasia Yankova
- Anatoly Tokov
- Anderson Silva
- Andre Fili
- Andre Pederneiras
- Andre Soukhamthath
- Andrea Lee
- Andreas Michailidis
- Andrei Arlovski
- Andrew Holbrook
- Andrew Schleimer
- Andrew Yang
- Angela Hill
- Angela Lee
- Angela Magana
- Aniah Blanchard
- Anthony Bourdain
- Anthony Engelen
- Anthony Hernandez
- Anthony Johnson
- Anthony Pettis
- Anthony Smith
- Antonina Shevchenko
- Antonio 'Bigfoot' Silva
- Antonio 'Lil Nog' Nogueira
- Antonio Carlos Junior
- Antonio Inoki
- Antonio McKee
- Antonio Tarver
- Antony Hernandez
- Anzhelika Stepanenko
- ARES Fighting Championship
- Ari Emanuel
- Ariane Lipski
- Arianny Celeste
- Ariel Helwani
- Ariel Sexton
- Arjan Bhullar
- Arnold Allen
- Arnold Schwarzenegger
- Art Davie
- Artem Lobov
- Ashlee Evans-Smith
- Aspen Ladd
- Augusto Mendes
