2021 NCAA National Collegiate Women's Ice Hockey Tournament

The 2021 NCAA National Collegiate Women's Ice Hockey Tournament was a single-elimination tournament by eight schools to determine the national champion of women's NCAA Division I college ice hockey. The quarterfinals were played at the Erie Insurance Arena on March 15 and 16, 2021, with the Frozen Four played on March 18 and 20, 2021 at Erie Insurance Arena in Erie, Pennsylvania.

Qualifying teams
In the sixth year under this qualification format, the winners of all four Division I conference tournaments received automatic berths to the NCAA tournament. The other four teams were selected at-large. The top four teams were then seeded.

Bracket
Note: * denotes overtime period(s)