Keates is a surname. Notable people with the surname include:
Albert Keates (1862–1949), British pipe organ builder Chris Keates (born 1951), British trade unionist Dean Keates (born 1978), British footballer Elizabeth Keates, British actress Jonathan Keates (born 1946), British writer, biographer and novelist Laura Keates (born 1988), British rugby union player Reginald Keates (born 1980), South African-born British cricketer