The 2017–18 Eastern Washington Eagles men's basketball team represented Eastern Washington University during the 2017–18 NCAA Division I men's basketball season. The Eagles were led by first-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 20–15, 13–5 in Big Sky play to finish in a tie for third place. At the Big Sky tournament they defeated Portland State and Southern Utah to advance to the championship game where they lost to Montana. They were invited to the College Basketball Invitational where they lost in the first round to Utah Valley.