The 2020–21 Úrvalsdeild kvenna is the 64th season of the Úrvalsdeild kvenna, the top tier women's basketball league on Iceland.

[1] It concluded on 2 June 2021 with Valur winning their second title after beating Haukar 3–0 in the Úrvalsdeild finals.

[2] The participating teams first play a conventional round-robin schedule with every team playing each opponent twice "home" and twice "away" for a total of 28 games.

The top four teams qualify for the championship playoffs whilst the bottom team will be relegated to 1. deild kvenna.

Note: Valur was awarded a 20-0 victory against Breiðablik due to the later using a player that was serving a 1 game suspension.