Graigwen was the name of two steamships operated by I Williams & Co, Cardiff.
- SS Graigwen (1925), torpedoed and sunk in 1940
- SS Graigwen (1943), in service 1946–58
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.