Sorted alphabetically by last name · 2707 fighters
| Name | Nickname | |
|---|---|---|
| AA | Alfonso Alcarez | |
| AA | Ali AlQaisi | "The Royal Fighter" |
| AB | Ali Bagautinov | "Puncher" |
| AK | Aliaskhab Khizriev | "Black Wolf" |
| AI | Alibi Idiris | |
| AA | Alice Ardelean | |
| AP | Alice Pereira | "Golden Girl" |
| AO | Alistair Overeem | "The Demolition Man" |
| AS | Aljamain Sterling | "Funk Master" |
| AG | Allan Goes |