Pajama Party is a 1964 beach party film starring Tommy Kirk and Annette Funicello. This is the fourth in a series of seven beach films produced by American International Pictures. The other films in this series are Beach Party (1963), Muscle Beach Party (1964), Bikini Beach (1964), Beach Blanket Bingo (1965), How to Stuff a Wild Bikini (1965), Ski Party (1965) and The Ghost in the Invisible Bikini (1966).

The beach party film is an American film genre of feature films which were produced and released between 1963 and 1968, created by American International Pictures (AIP), beginning with their surprise hit, Beach Party, in July 1963. With this film, AIP is credited with creating the genre. In addition to the AIP films, several contributions to the genre were produced and released by major and independent studios alike. According to various sources, the genre comprises over 30 films, with the lower-budget AIP films being the most profitable.