2009–10 Cornell Big Red women's ice hockey season

The Big Red were coached by Doug Derraugh and assisted by Dani Bilodeau and Edith Zimmering.

The Big Red were a member of the Eastern College Athletic Conference and were one of the most improved teams in the NCAA.

The Big Red won 21 games, an improvement of nine wins over the 2008-09 season.

Cornell won the league's post-season tournament, defeating Clarkson 4-3 in overtime in the championship game.

The team qualified for the NCAA tournament and advanced to the championship game before losing to Minnesota-Duluth 3-2 in the third overtime period.