Ontario Tech University is proud to host the 2021 OUA women's field lacrosse championship from October 30-31 in Oshawa. This marks the 11^th OUA championship that Ontario Tech will host. Previously, the Ridgebacks have played host to tennis (2009, 2012), golf (2014, 2015), curling (2017), women's soccer (2017), women's field lacrosse (2014, 2015, 2019) and badminton (2019).

Saturday, October 30 – Round Robin
Game 1 – Ontario Tech defeats McMaster 16-9
Players of the Game: Caitlyn Cote (ONT) and Sophie Skillen (MAC)
Game 2 – Toronto defeats Brock 15-7
Players of the Game: Mia Friesen (BRO) and Olivia Hoffman (TOR)
Game 3 – Trent defeats Guelph 12-5
Players of the Game: Shayla Larson (GUE) and Avery Digorgio (TRE)
Game 4 – Western defeats McMaster 18-1
Players of the Game: Kiera McDougall (MAC) and Lexie Delisie (WES)
Game 5 – Queen's defeats Brock 25-2
Players of the Game: Jaycelyn Hopkins (BRO) and Brooke Rutledge (QUE)
Game 6 – Guelph defeats Laurier 9-7
Players of the Game: Shayla Larson (GUE) and Olivia Purcell (WLU)
Game 7 – Western defeats Ontario Tech 19-6
Players of the Game: Samantha Blair (ONT) and Taya Keast (WES)
Game 8 –  Queen's defeats Toronto 16-2
Players of the Game: Olivia Hofmann (TOR) and Jaedyn Small (QUE)
Game 9 – Trent defeats Laurier 19-5
Players of the Game: Natalie Fournier (TRE) and Delaney Keen (WLU)

Sunday, October 31 – Medal Round (Vaso's Field)
Semifinal 1 – Trent defeats Western 13-5
Players of the Game: Mackenzie Manuliak (TRE) and Erin Heidecker (WES)
Semifinal 2 – Queen's defeats Guelph 22-1
Players of the Game: Jaedyn Small (QUE) and Shayla Larson (GUE)

Bronze Medal Match – Western defeats Guelph 9-6
Players of the Game: Taya Keast (WES) and Shayla Larson (GUE)
Gold Medal Match –  Trent defeats Queen's 10-9
Players of the Game: Avery Digiorgio (TRE) and Abby Lee (QUE)