John Davidson (born in Pittsburgh on December 13, 1941) is an American actor, best known for hosting That's Incredible! and Hollywood Squares in the 1980s.

He made his Broadway debut in the 1964 production of Foxy, which also starred Bert Lahr. Davidson is also a singer. He has recorded 12 albums, performed in various musicals and has acted in many movies including, The Happiest Millionaire, The One and Only Genuine Original Family Band, Coffee Tea or Me, The Dallas Cowboy Cheerleaders II, Airport '79 and Edward Scissorhands. He is currently acting on Broadway.