UFC on ESPN 20: Chiesa vs. Magny was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on January 20, 2021, at the Etihad Arena on Yas Island, Abu Dhabi, United Arab Emirates. A welterweight bout between The Ultimate Fighter: Live lightweight winner Michael Chiesa and Neil Magny served as the main-event.

Thiago Santos vs. Johnny Walker (Light Heavyweight) Kevin Holland vs. Kyle Daukaus (Middleweight) Alex Oliveira vs. Niko Price (Welterweight) Misha Cirkunov vs. Krzysztof Jotko (Middleweight) Alexander Hernandez vs. Mike Breeden (Lightweight)