Campbell Bascom Slemp (September 4, 1870 – August 7, 1943) was an American Republican politician.
He was a six-time United States congressman from Virginia's 9th congressional district from 1907 to 1923 and served as the presidential secretary to President Calvin Coolidge.
As a philanthropist, Slemp set up the "Slemp Foundation", which provides gifts and scholarships to schools and colleges in Southwestern Virginia.