Kalen Douglas DeBoer (born October 24, 1974) is an American football coach. He is the head football coach at the University of Washington. DeBoer served as the head football coach at the University of Sioux Falls from 2005 to 2009 and California State University, Fresno from 2020 to 2021. At Sioux Falls, his teams won three NAIA Football National Championships, in 2006, 2008, and 2009.