1979–80 BYU Cougars men's basketball team

The 1979–80 BYU Cougars men's basketball team represented Brigham Young University in the 1979–80 college basketball season. This was head coach Frank Arnold's 5th season at BYU. The Cougars finished the regular season with a record of 24–5, 13–1 in the Western Athletic Conference. The team's sole conference loss was by a 53–56 score against Wyoming.

Junior Guard Danny Ainge was leading scorer, averaging 19.1 points per game. Center Alan Taylor with 12.5 rebounds per game.

Schedule
!colspan=9 style=| Regular Season

!colspan=12 style=|NCAA Tournament