The third season of the American version of the television reality program Love Island premiered on CBS in the United States and CTV in Canada on July 7, 2021.

At the villa, the couples must share a bed for sleeping and are permitted to talk with other Islanders at any time, allowing them to get to know everyone.

[5] Initially, Tony "Ballo" Caraballo was announced as part of the cast entering for the Casa Amor twist, but was replaced by Kamryn "Kam" Mickens-Bennett the next day.

[8] Cashay Proudfoot, Javonny Vega, Melvin "Cinco" Holland, Jr. and Shannon St. Clair competed on The Challenge: USA.

CBS announced that Love Island had been renewed for a third season on January 27, 2021, with Vandenberg confirmed to return as host on the same day.