Love in a Four Letter World is a Canadian softcore pornographic film, directed by John Sone and released in 1970. The film stars Michael Kane and Helen Whyte as Harry and Vera Haven, a wealthy couple whose lives are turned upside down when a group of hippies move into a commune in the house next door, drawing first their daughter Susan (Candy Greene), and then Helen herself, into their bohemian free love philosophy.

The cast also includes André Lawrence, Pierre Létourneau, Cayle Chernin and Monique Mercure.

The film was shot in the Crescent Street neighbourhood of Montreal. Producer Arthur Veronka claimed that "outside of Isabel or any Paul Almond production, Love in a Four Letter World is the first English-Canadian film that doesn't have that National Film Board-CBC look."

The film was entered in competition at the 22nd Canadian Film Awards in 1970, although Cinepix Film Properties, the film's studio, subsequently withdrew it and Here and Now (L'Initiation) from the competition after an article in Time implied that the Canadian Film Award jury was unsympathetic to the films' sexual content.