The Loyola Marymount Lions are the athletic teams that represent Loyola Marymount University, a Jesuit institution in Los Angeles, California. The school competes in NCAA Division I and the West Coast Conference.

In January 2024, the university announced that it would cut six athletic programs at the end of the 2023–24 season: men’s cross-country, men’s rowing, men’s track and field, women’s rowing, women’s swimming, and women’s track and field.

The Lions have produced 30 future Major Leaguers, including Billy Bean, MLB's Vice President and Special Assistant to the Commissioner, First-Team All-American and West Coast Conference Player of the Year Billy Traber, two-time Major League Baseball All-Star CJ Wilson, and David Fletcher.

The Lions have been to the College World Series once, in 1986, and also recorded 9 NCAA appearances, and 10 West Coast Conference Championships (three Championship Series and seven regular season).

The Lions play home games at George C. Page Stadium, a 1,200 seat stadium which has been home to the program since 1983.

The Lions burst onto the national basketball scene in the late 1980s under coach Paul Westhead. His teams led Division I in scoring in 1988 (110.3 points per game), 1989 (112.5) and 1990 (122.4). LMU's 122.4 point per game in 1990 was still a record as of October 2010. As of October 2010, Loyola Marymount held the five highest combined scoring games in Division I history. Four of the five occurred during Westhead's career, including a record 331 in the 181–150 win over United States International University on January 31, 1989.

The team's last appearance in the NCAA Division I men's basketball tournament was in 1990, where they advanced to the Elite Eight. They would lose to eventual national champion UNLV. Prior to the tournament, Lions star player Hank Gathers died during the WCC conference tournament from a heart condition.

LMU's current men's head coach is Stan Johnson.