Four ships of the Royal Navy have been named HMS Redoubt, for the redoubt, a type of enclosed fort:
was a 20-gun floating battery, formerly the civilian Rover. She was purchased in 1793 and sold in 1802. was an launched in 1916 and sold in 1926. was an R-class destroyer launched in 1942 and transferred to the Indian Navy in 1949 as Ranjit. was a Mark 8 Landing Craft Tank launched in 1945 as LCT 4001, named Redoubt in 1956 and sold in 1966 as the ferry Dimitris.