Patrick Aaron Angerer (born January 31, 1987) is an American former professional football player who was a linebacker in the National Football League (NFL). He played college football for the Iowa Hawkeyes and was selected by the Indianapolis Colts in the second round of the 2010 NFL draft.

Angerer attended Bettendorf High School in Bettendorf, Iowa, where he recorded career totals of 344 tackles, including 63 tackles for loss, 17 quarterback sacks, five forced fumbles, four recovered fumbles and one interception while playing middle linebacker. A team captain as a senior, he holds school records for tackles in a game (25), season (197) and career (344). Angerer earned first team all-state honors as a senior and junior.

Considered a three-star recruit by Rivals.com, Angerer was listed as the No. 26 inside linebacker prospect in the nation. He chose the University of Iowa over Iowa State, Indiana and Northern Illinois.

After redshirting his initial year at Iowa, Angerer saw limited action as third team weak side linebacker in his freshman season, and second team weak side linebacker in his injury-filled sophomore season.

Working through mononucleosis, as well as hamstring, groin and shoulder injuries, Angerer finally made the starting lineup in 2008. Occupying the middle linebacker spot, he led the Hawkeyes in tackles with 107 stops, including 45 solo tackles and 62 assists, and also had five interceptions. Angerer subsequently earned Second-team All-Big Ten honors in 2008.

For the 2009 season, Angerer was named to Butkus Award, Lombardi Award, and Bednarik Award watch lists. By November 2009, Angerer was named one of sixteen semifinalists for the Bednarik Award.

Angerer was one of five finalists for Bronko Nagurski Award

In the 2010 NFL draft, Angerer was selected in the second round by the Indianapolis Colts with the 63rd overall pick.