Several ships of the Swedish Navy have been named HSwMS Sjöormen, named after the sea serpent:
- HSwMS Sjöormen (1941) was a Sjölejonet-class submarine launched in 1941
- HSwMS Sjöormen (Sor) was a Sjöormen-class submarine launched in 1967 and sold to Singapore in 1997
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.