Harold Dunbar Cooley (July 26, 1897 – January 15, 1974) was an American politician of the Democratic Party.
He represented the Fourth Congressional district of North Carolina from 1934 to 1966.
Cooley remains the longest-serving Chairman in the history of the United States House Committee on Agriculture.
Cooley was one of the few Southern Congressmen not to sign the 1956 Southern Manifesto that opposed the desegregation of public schools ordered by the Supreme Court in Brown v.
Board of Education.
He was nearly defeated in 1964 by Republican James Carson Gardner and lost to Gardner in a stunning 13-point upset in 1966.His home at Nashville, the Bissette-Cooley House, was listed on the National Register of Historic Places in 1985.