Lonesome Ghosts is a 1937 Disney animated cartoon, released through RKO Radio Pictures on Christmas Eve, three days after Snow White and the Seven Dwarfs (1937). It was directed by Burt Gillett and animated by Izzy (Isadore) Klein, Ed Love, Milt Kahl, Marvin Woodward, Bob Wickersham, Clyde Geronimi, Dick Huemer, Dick Williams, Art Babbitt, and Rex Cox. The short features Mickey Mouse, Donald Duck & Goofy as members of The Ajax Ghost Exterminators. It was the 98th short in the Mickey Mouse film series to be released, and the ninth for that year.

This short marked the first use of one of Goofy's catchphrases, "Somethin' wrong here!".

The film features a comedy horror plot. A quartet of trickster ghosts have settled into a haunted house. They are bored because this house has had no visitors for quite some time, and there is nobody around to fall victim to their pranks. They decide to hire a trio of ghost exterminators by telephone, and then amuse themselves by pranking the exterminators.