Mumsy, Nanny, Sonny and Girly (released as Girly outside the United Kingdom) is a 1970 British comedy horror film directed by Freddie Francis and starring Michael Bryant, Ursula Howells, Pat Heywood, Howard Trevor and Vanessa Howard.

Francis wanted the opportunity to direct a film over which he had complete creative control, instead of working on assignment from a studio (as was the case with his previous directorial efforts). He teamed with writer Brian Comport to build the film around Oakley Court, which Francis had used for exterior shots in previous films. The script was based on a two-act play by Maisie Mosco titled Happy Family, which was adapted into a novella by screenwriter Brian Comport as Mumsy, Nanny, Sonny and Girly. Although the film fared poorly in British cinemas, it enjoyed a brief, successful run in North America, and subsequently achieved status as a cult film.

In the film, four inhabitants of a secluded manor house in England amuse themselves with a bizarre role-playing game.