The 2018 Dartmouth Big Green football team represented Dartmouth College in the 2018 NCAA Division I FCS football season as a member of the Ivy League.

The Big Green were led by head coach Buddy Teevens in his 14th straight year and 19th overall.

They finished the season 9–1 overall and 6–1 in Ivy League play to place second.

The Big Green hosted Ivy League foes Penn, Harvard, and Brown, and traveled to Yale, Princeton, Columbia, and Cornell.

Dartmouth's non-conference opponents were Georgetown and Holy Cross of the Patriot League, and Sacred Heart of the Northeast Conference.