Good Neighbor Sam is a 1964 American Eastman Color screwball comedy film co-written and directed by David Swift, based on the 1963 novel of the same name by Jack Finney. It stars Jack Lemmon, Romy Schneider, Dorothy Provine, Michael Connors, Edward Andrews, Louis Nye, Robert Q. Lewis and Edward G. Robinson.

The screenplay was the motion picture debut of James Fritzell and Everett Greenbaum, who had written many American television sitcoms including The Andy Griffith Show and Mister Peepers (created by David Swift). Greenbaum also created the mobile sculpture featured in the film.