Fight Island is a series of Ultimate Fighting Championship (UFC) mixed martial arts events held on Yas Island in Abu Dhabi, United Arab Emirates in 2020 and 2021 during the COVID-19 pandemic.

[1][2] Until 2021, all Fight Island events were held behind closed doors in the du Forum; a bio-secure bubble was established, which consisted of a "safe zone" comprising hotels, training facilities, the beach, and restaurants.

[3] All participants and staff were required to test negative for SARS-CoV-2 multiple times before traveling to or entering the bubble, and individuals entering the arena were required to go through disinfecting "mist tunnels".

[6] Shortly after Oliver had suggested various alternative names for the island including "UF-Sea",[7] Zuffa registered "UFSEA" as a trademark.

[8] Beginning with UFC on ABC: Holloway vs. Kattar on January 16, 2021, the UFC moved its Fight Island events to Yas Island's newly opened Etihad Arena, capped at 2,000 of its 18,000-seat capacity.