The 2023–24 Saint Mary's Gaels men's basketball team represented Saint Mary's College of California during the 2023–24 NCAA Division I men's basketball season.

The team was led by head coach Randy Bennett in his 23rd season at Saint Mary's.

The Gaels played their home games at the University Credit Union Pavilion[a] in Moraga, California, as members of the West Coast Conference (WCC).

5 seed in the West region, they were upset in the first round by Grand Canyon.

In the WCC tournament, they defeated BYU in the semifinals before losing to Gonzaga in the championship.