Four ships of the Royal Navy have carried the name HMS Crocus, after the crocus, a genus of flowering plants.
- HMS Crocus (1808) was a 14-gun sloop launched in 1808 and sold in 1815.
- HMS Crocus (1856) was a wooden screw Albacore-class gunboat launched in 1856 and broken up in 1864.
- HMS Crocus (1915) was an Arabis-class minesweeping sloop launched in 1915 and sold in 1930.
- HMS Crocus (K49) was a Flower-class corvette launched in 1940 and sold into civilian service in 1946 under the name Annlock.
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.