The 2020–21 Lehigh Mountain Hawks men's basketball team represented Lehigh University in the 2020–21 NCAA Division I men's basketball season.

The Mountain Hawks, led by 14th-year head coach Brett Reed, played their home games at Stabler Arena in Bethlehem, Pennsylvania as members of the Patriot League.

With the creation of mini-divisions to cut down on travel due to the COVID-19 pandemic, they play in the Central Division.

[1] The Mountain Hawks finished the 2019–20 season 11–21, 7–11 in Patriot League play to finish in a tie for eighth place.

They defeated Loyola (MD) in the first round of the Patriot League tournament,[2] before losing in the quarterfinals to Colgate.