Barnacle Bill is a 1957 Ealing Studios comedy film directed by Charles Frend and starring Alec Guinness. It was written by T. E. B. Clarke. Guinness plays an unsuccessful Royal Navy officer and six of his maritime ancestors.

Ealing Studios is a television and film production company and facilities provider at Ealing Green in West London, London, England. Will Barker bought the White Lodge on Ealing Green in 1902 as a base for film making, and films have been made on the site ever since. It is the oldest continuously working studio facility for film production in the world, and the current stages were opened for the use of sound in 1931.