The 2021 BYU Cougars women's volleyball team represents Brigham Young University in the 2021 NCAA Division I women's volleyball season. The Cougars are led by seventh year head coach Heather Olmstead and play their home games at the Smith Fieldhouse. The Cougars are members of the WCC. BYU comes off a season where they finished first and won the WCC regular season championship. The Cougars received an automatic big to the NCAA tournament falling to Wisconsin.