The 2009–10 Cleveland State Vikings men's basketball team represented Cleveland State University in the 2009-10 NCAA Division I men's basketball season.

The team was led by fourth-year head coach Gary Waters and played their home games at the Wolstein Center.

They finished the season 16–17, 10–8 in Horizon League play.

The Vikngs lost in the quarterfinals of the Horizon League tournament to Milwaukee.

Note: Flags indicate national team eligibility at FIBA sanctioned events.