The 2018–19 Dayton Flyers men's basketball team represented the University of Dayton during the 2018–19 NCAA Division I men's basketball season.

The Flyers were led by second-year head coach Anthony Grant and played their home games at the University of Dayton Arena as members of the Atlantic 10 Conference.

3 seed in the A-10 Tournament, they lost to Saint Louis in the quarterfinals.

They received an at-large bid to the NIT where they lost in the first round to Colorado.

They lost in the second round of the A-10 tournament to VCU.