Two ships of the Royal Navy have been named HMS Triad
- HMS Triad: a yacht that served as a headquarters ship during World War One and interwar Persian gulf. She was sold in 1933
- HMS Triad: a T-Class submarine launched in 1939 and sunk in 1940.
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.