Haunted Harbor (1944) is a Republic movie serial, based on the novel by Ewart Adamson.

Sea captain Jim Marsden is about to be hanged for a murder he didn't commit, and is rescued from the gallows by two of his crewmen. To clear the captain's name, they head for the island of Pulinan, where they believe the real murderer is hiding. During the search for the killer, one thing leads to another and Jim and the crew soon find that their troubles have just started. Investigating a possible hiding place of the killer, Jim encounters huge sea monsters in Haunted Harbor.

Haunted Harbor's official release date is 26 August 1944, it was re-released on 26 September 1951, under the new title Pirates' Harbor

Haunted Harbor stars Kane Richmond as Jim Marsden, Kay Aldridge as Patricia Harding, and Roy Barcroft as Carter (aka Kane).

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