The 2019–20 Charleston Southern Buccaneers men's basketball team represented Charleston Southern University in the 2019–20 NCAA Division I men's basketball season.

The Buccaneers, led by 15th-year head coach Barclay Radebaugh, played their home games at the CSU Field House in North Charleston, South Carolina as members of the Big South Conference.

They finished the season 14–18, 7–11 in Big South play to finish in a three-way tie for seventh place.

They defeated Presbyterian in the first round of the Big South tournament before losing in the quarterfinals to Radford.

In the Big South tournament, they defeated USC Upstate in the first round,[1] upset Winthrop in the quarterfinals,[2] before losing to Radford in the semifinals.