UFC Fight Night: Font vs. Aldo is a mixed martial arts event produced by the Ultimate Fighting Championship that took place on December 4, 2021 at UFC Apex in Las Vegas, United States.
Main Card Results
| Weight Class | Fight | Method | Round | Results |
| Bantamweight | Rob Font vs. José Aldo | Decision | R5 (05:00) | José Aldo def. Rob Font |
| Lightweight | Brad Riddell vs. Rafael Fiziev | KO/TKO | R3 (02:20) | Rafael Fiziev def. Brad Riddell |
| Light Heavyweight | Jimmy Crute vs. Jamahal Hill | KO/TKO | R1 (00:48) | Jamahal Hill def. Jimmy Crute |
| Lightweight | Clay Guida vs. Leonardo Santos | Submission | R2 (01:21) | Clay Guida def. Leonardo Santos |
| Middleweight | Brendan Allen vs. Chris Curtis | KO/TKO | R2 (01:58) | Chris Curtis def. Brendan Allen |
| Welterweight | Alex Morono vs. Mickey Gall | Decision | R3 (05:00) | Alex Morono def. Mickey Gall |
Preliminary Card Results
| Weight Class | Fight | Method | Round | Results |
| Middleweight | Maki Pitolo vs. Dusko Todorovic | KO/TKO | R1 (04:34) | Dusko Todorovic def. Maki Pitolo |
| Flyweight | Manel Kape vs. Zhalgas Zhumagulov | KO/TKO | R1 (04:02) | Manel Kape def. Zhalgas Zhumagulov |
| Welterweight | Bryan Barberena vs. Darian Weeks | Decision | R3 (05:00) | Bryan Barberena def. Darian Weeks |
| Women Strawweight | Cheyanne Buys vs. Mallory Martin | Decision | R3 (05:00) | Cheyanne Buys def. Mallory Martin |
| Light Heavyweight | Alonzo Menifield vs. William Knight | Decision | R3 (05:00) | William Knight def. Alonzo Menifield |
| Lightweight | Claudio Puelles vs. Chris Gruetzemacher | Submission | R3 (03:25) | Claudio Puelles def. Chris Gruetzemacher |
| Bantamweight | Louis Smolka vs. Vince Morales | KO/TKO | R1 (02:02) | Vince Morales def. Louis Smolka |