Hello, Dolly! is a 1964 musical with lyrics and music by Jerry Herman and a book by Michael Stewart, based on Thornton Wilder's 1938 farce The Merchant of Yonkers, which Wilder revised and retitled The Matchmaker in 1954. The musical follows the story of Dolly Gallagher Levi, a strong-willed matchmaker, as she travels to Yonkers, New York, to find a match for the miserly "well-known unmarried half-a-millionaire" Horace Vandergelder.

The Matchmaker is a 1954 Broadway play by Thornton Wilder, a rewritten version of his 1938 play The Merchant of Yonkers.