Kalen Douglas DeBoer[2] (born October 24, 1974)[3] is an American college football coach.

[4][5][6][7] After a redshirt year at Western Washington University, attended the University of Sioux Falls, DeBoer played at wide receiver from 1993 to 1996 for the Sioux Falls Cougars under head coach Bob Young, setting school records for receptions (234), receiving yardage (3,400) and touchdown catches (33) and earned All-American honors.

[8][9] DeBoer was a student assistant at Sioux Falls in 1997 after his football playing career ended working with the wide receivers, and he graduated in 1998 with a bachelor's degree in secondary education.

[11][12] After one season, he signed with the Sioux Falls Cobras of the Indoor Football League (IFL).

In 2001, the team rebranded to the Sioux Falls Storm and moved to the National Indoor Football League (NIFL).

DeBoer also played baseball at Sioux Falls, hitting .520 with 10 home runs and 34 RBIs in his senior season of 1997.

[4][7] After two years at Washington, DeBoer reunited with Bob Young and returned to his alma mater as offensive coordinator, a position he held from 2000 to 2004.

[17] Following Young's retirement, Sioux Falls promoted DeBoer to head coach on December 1, 2004.

[18] As head coach from 2005 to 2009, DeBoer had a record of 67–3 and won three NAIA national championships in 2006, 2008, and 2009 and a runner-up appearance in 2007.

[7] Two of DeBoer's losses at Sioux Falls came at the hands of Mike Van Diest's national title-winning Carroll Fighting Saints squads in 2005 and 2007.

[7] He held the same position at Eastern Michigan University from 2014 to 2016 under Chris Creighton, at Fresno State from 2017 to 2018 under Jeff Tedford, and most recently at Indiana under Tom Allen in 2019.

[40] On January 12, 2024, after the retirement of Nick Saban, DeBoer accepted an offer to become the next head coach at the University of Alabama.

[43] In the season opener, DeBoer picked up his first win as Alabama's head coach against Western Kentucky 63–0.

[48] The next day, Alabama moved to #1 in the AP Poll, marking the 16th year in the last seventeen seasons the Tide have reached the top spot.