The 2019–20 Columbia Lions men's basketball team represented Columbia University in the 2019–20 NCAA Division I men's basketball season.
The Lions, led by fourth-year head coach Jim Engles, played their home games at Levien Gymnasium in New York City as members of the Ivy League.
They failed to qualify for the Ivy League tournament, although the tournament was ultimately cancelled due to the COVID-19 pandemic.
In turn, they failed to qualify for the Ivy League tournament.
In May 2019, assistant Kenny Blakeney was hired as the new head coach at Howard.