Harry Anthony Dunn (born September 25, 1983) is an American author, political candidate, and former police officer who served in the United States Capitol Police from 2008 to 2023. Dunn was one of several officers present during the attack on the U.S. Capitol on January 6, and testified with his colleagues before the United States Congress for the House Select Committee investigating the attack. His efforts have earned him both the Congressional Gold Medal and Presidential Citizens Medal.