True as a Turtle is a 1957 British comedy film directed by Wendy Toye and starring John Gregson, Cecil Parker, June Thorburn and Keith Michell. In the film, a young couple embark on a voyage on a ketch named "Turtle". John Coates wrote the screenplay, based on his novel of the same name.
Although designed to be comedic, the film was deemed unfunny by parts of the population.