Two ships of the Royal Navy have been named HMS Conway Castle after Conwy Castle in Wales.
- HMS Conway Castle (1804) acquired c. 1804, was an Irish gun vessel hired to fight in the Napoleonic Wars.
- HMS Conway Castle (FY509), launched in 1916, was a 274-ton naval trawler. She was commissioned by the Royal Navy in August 1939 and served as a minesweeper during World War II.
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.