The 2018 UC Davis football team represented the University of California, Davis as a member of the Big Sky Conference during the 2018 NCAA Division I FCS football season.

Led by second-year head coach Dan Hawkins, the Aggies compiled an overall record of 10–3 with a mark of 7–1 in conference play, sharing the Big Sky titlewith Eastern Washington and Weber State.

UC Davis received an at-large bid to the NCAA Division I Football Championship playoffs where, after a first round bye, they defeated Northern Iowa in the second round before losing in the quarterfinals to Eastern Washington.

On July 16, 2018, during the Big Sky Kickoff in Spokane, Washington, the Aggies were predicted to finish in ninth place in both the coaches and media poll.

[1] The Aggies had two players selected to the Preseason All-Conference Team.