Two ships of the Royal Navy have been named HMS Lydiard
- HMS Lydiard (1914), was a Laforey-class destroyer that served in World War I.
- Lydiard (FY177), launched in 1935, was a 440-ton trawler purchased by the Admiralty in September 1939 and converted for anti-submarine warfare. She served in World War II and was sold in 1946.
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.