Mayfield received 51 first-place votes from the 56 AP college football poll voters who submitted player of the year ballots, and a total of 157 points. Love (83 points) and Jackson (39 points) each received two first-place votes. Penn State running Saquon Barkley received a first-place vote and came in fourth.
Mayfield, Love and Jackson are the finalists for the Heisman, which will be handed out Saturday night in New York.
Mayfield is a former walk-on who has led the No. 2 Sooners to the College Football Playoff, where they will play No. 3 Georgia in the Rose Bowl on Jan. 1. Mayfield leads the nation in passer efficiency rating and has thrown for 4,340 yards and 41 touchdowns with just five interceptions.
He joins Josh Heupel (2000), Jason White (2003) and Sam Bradford (2008) as previous winners from Oklahoma. No other school has had more than two players win AP Player of the Year.