The Port St Charles marina is an affluent and upscale luxury marina development situated on the western coast of Barbados. Found within the parish of Saint Peter, the marina is in close proximity to the main area of Speightstown in Six Mens Bay. Port St Charles is made up exclusive villas, condos and apartments, and a small inland lagoon area adorned with facilities for residents to berth their yachts close to their vacation homes.

The marina is host to a branch of the government's customs and immigration bureau as well as a Coast Guard sub office, and is one of two officially-classified sea-based ports of entry in Barbados-the harbour in the capital city of Bridgetown being the second. Also found in the development are a "heliport" to transport guests to the Grantley Adams International Airport or the Bridgetown Heliport, a health spa, and just off the coast of the Marina lies the Tom Snooch Reef.

The inner lagoon of Port St Charles is restricted and is only available to residents or persons staying at the marina development.

Properties at the Port St. Charles Marina are managed by Port St. Charles Development Ltd.