The 2023–24 Eastern Washington Eagles men's basketball team represented Eastern Washington University during the 2023–24 NCAA Division I men's basketball season.

The Eagles, led by third-year head coach David Riley, played their home games at Reese Court in Cheney, Washington as members of the Big Sky Conference.

The Eagles finished the 2022–23 season 23–11, 16–2 in Big Sky play, to finish as Big Sky regular season champions.

[1] After clinching the regular season title at 16–0 in conference play with two games remaining, they dropped three straight games, including their matchup against ninth seed Northern Arizona in the quarterfinals of the Big Sky tournament.

[2] As a regular season champion who failed to win their conference tournament, the Eagles received an automatic bid to the NIT.