The 2018 Portland State Vikings football team represented Portland State University during the 2018 NCAA Division I FCS football season.

They were led by fourth-year head coach Bruce Barnum and played their home games at Hillsboro Stadium and Providence Park.

They were a member of the Big Sky Conference.

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

[1] The Vikings had one player selected to the Preseason All-Conference Team.