The 2017–18 Princeton Tigers men's basketball team represented Princeton University during the 2017–18 NCAA Division I men's basketball season.

The Tigers, led by seventh-year head coach Mitch Henderson, played their home games at Jadwin Gymnasium as members of the Ivy League.

They finished the season 13–16, 5–9 in Ivy League play to finish in a tie for fifth place and failed to qualify for the Ivy League tournament.

They defeated Penn and Yale to win the inaugural Ivy League tournament championship.

As a result, they earned the conference's automatic bid to the NCAA tournament as the No.