The 2019–20 UC Davis Aggies men's basketball team represented the University of California, Davis in the 2019–20 NCAA Division I men's basketball season. The Aggies, led by ninth-year head coach Jim Les, played their home games at The Pavilion in Davis, California as members of the Big West Conference. They finished the season 14–18, 8–8 in Big West play to finish in a tie for fourth place. They were set to be the No. 5 seed in the Big West tournament. However, the Big West tournament was canceled amid the COVID-19 pandemic.