Tyrant of the Sea is a 1950 American historical war film set during the Napoleonic Wars and starring Ron Randell, Rhys Williams and Lester Matthews.

Randell made the film while also appearing on stage in a double bill of Terence Rattigan plays, Harlequinade and The Browning Version.

[1] The film began as a project titled The Return of Captain Bligh and was to star Charles Laughton, who had famously played Captain Bligh in Mutiny on the Bounty (1935).

However Laughton, did not wish to repeat his performance, so the script was rewritten to focus on a fictitious character[2] based on Bligh that would eventually be played by Rhys Williams.

[4] The film's sets were designed by art director Paul Palmentola.