The 2018 Princeton Tigers football team represented Princeton University in the 2018 NCAA Division I FCS football season.

They were led by ninth-year head coach Bob Surace and played their home games at Powers Field at Princeton Stadium.

Princeton was a member of the Ivy League.

They finished the season 10–0 overall and 7–0 in Ivy League play to win the Ivy League title.

Princeton averaged 6,561 fans per game.