Two ships of the Royal Navy have been named HMS Polyanthus after the flower:
- HMS Polyanthus (1917) was an Aubrietia-class sloop of World War I
- HMS Polyanthus (K47) was a Flower-class corvette of 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.