Ridder announced his decision Friday in a video posted to Twitter, under the heading "One Last Ride," that was also tweeted by the Bearcats.
Ridder completed 66.2% of his passes for 2,296 yards with 19 touchdowns and six interceptions this season, as Cincinnati won its first nine games before falling 24-21 to Georgia in the Peach Bowl. Ridder earned American Offensive Player of the Year honors and was a semifinalist for the Maxwell Award.
In three seasons, Ridder has 6,905 passing yards with 57 touchdowns and 20 interceptions. He is 30-5 as Cincinnati's quarterback, the winningest Bearcats signal-caller in team history.
The 6-foot-4, 215-pound Ridder does not appear in ESPN's Mel Kiper Jr.'s quarterback rankings for the 2021 draft. He told Yahoo Sports that he received feedback from the NFL projecting him as a fourth- to sixth-round draft pick if he left school now.