Oyster Rock is an island in the Mumbai Harbour, Mumbai, India. It is heavily fortified, and owned by the Indian Navy. For a short while, the islet was used as a naval museum.^{[citation needed]} Every time when the Admiral of The Fleet sails out or in with the Naval fleet, a guard of honour is conducted with a 21 gun salute with sailors standing on the entire perimeter of the island.^{[citation needed]}

In 2008, the Mumbai Port Trust proposed to set up an International Cruise Terminal at Oyster Rock.^[1] However, in 2009, the Indian Navy refused to grant permission citing security concerns in the aftermath of the 2008 Mumbai attacks.^[2]