McAdoo is a surname. Notable people with the surname include:
Ben McAdoo (born 1977), American football coach
Bob McAdoo (born 1951), American basketball player
Eleanor Wilson McAdoo (1889–1967), daughter of Woodrow Wilson and second wife of William Gibbs McAdoo
James Michael McAdoo (born 1993), American basketball player
Orpheus McAdoo (1858–1900), African-American singer and minstrel show impresario
Tullie McAdoo (1884–1961), American negro league baseball player
William Gibbs McAdoo (1863–1941), American Secretary of the Treasury
