The 2018–19 Mount St. Mary's Mountaineers men's basketball team represented Mount St. Mary's University during the 2018–19 NCAA Division I men's basketball season.

The Mountaineers were led by first-year head coach Dan Engelstad, and played their home games at Knott Arena in Emmitsburg, Maryland as members of the Northeast Conference (NEC).

2 seed in the NEC tournament, they were upset in the quarterfinals by Robert Morris.

On May 2, 2018, former head coach Jamion Christian left the team to take the head coaching job at Siena.

[1][2] One week later, the school hired former Mountaineer assistant coach Dan Engelstad from Division III Southern Vermont.