The 2018–19 Eastern Washington Eagles men's basketball team represented Eastern Washington University during the 2018–19 NCAA Division I men's basketball season. The Eagles were led by second-year head coach Shantay Legans and played their home games at Reese Court in Cheney, Washington as members of the Big Sky Conference. They finished the season 16–18, 12–8 in Big Sky play to finish in third place. They defeated Montana State and Southern Utah to advance to the championship game of the Big Sky tournament where they lost to Montana.