The Robert Morris Colonials men's lacrosse team represents Robert Morris University in National Collegiate Athletic Association (NCAA) Division I men's lacrosse.

[2] The Colonials play home games at Joe Walton Stadium on the RMU campus in the Pittsburgh suburb of Moon Township, Pennsylvania.

Before rejoining NEC men's lacrosse, RMU had housed that sport in the Atlantic Sun Conference (ASUN).

After leaving the NEC in 2020 to join the Horizon League, which does not sponsor men's lacrosse, the Colonials played as an independent for the 2021 season.

Conference tournament champion †NCAA canceled 2020 collegiate activities due to the COVID-19 virus.