Chris Klein is a married man.

The “American Pie” star tied the knot with travel agent Laina Rose Thyfault on Sunday, his rep confirms to Page Six.

Klein, 36, and his girlfriend of four years said their “I do’s” in front of 115 guests at the rustic Rainbow Ranch in Gallatin Gateway, Montana.

The pair announced their engagement during the holiday season of last year.

The actor was previously engaged to a pre-Tom Cruise Katie Holmes, but the pair split in 2005 before taking the plunge.