Mount St. Mary's Mountaineers men's lacrosse is a National Collegiate Athletic Association (NCAA) division I men's college lacrosse team representing Mount St. Mary's University in the Metro Atlantic Athletic Conference (MAAC).

The Mountaineers earned regular season conference titles in 1999, 2001, 2010, 2011, 2019, and 2023; won conference tournament championships in 2001, 2003, 2010, and 2011; and faced the University of Virginia in their 2003 and 2010 NCAA Division I men's lacrosse tournament appearances.

Head coach Chris Ryan was assisted by coaches Ryan O'Hagan, Matthew Dugan, and Kevin Murphy in his second season at the Mount.

Mekai Nelson, Brian Bradley, Seamus McCloskey, and Nathanael Merchant served as captains.

USILA Scholar All American College Crosse All Freshman Team