The 2017–18 Siena Saints men's basketball team represented Siena College during the 2017–18 NCAA Division I men's basketball season. The Saints, led by fifth-year head coach Jimmy Patsos, played their home games at the Times Union Center as members of the Metro Atlantic Athletic Conference. They finished the season 8–24 overall, 4–14 in MAAC play to finish in a tie for tenth place. As the No. 10 seed in the MAAC tournament, they lost in the first round to Quinnipiac.