Castore has been borne by at least three ships of the Italian Navy and may refer to:
- Italian minelayer Castore, a minelayer launched in 1888 and discarded in 1925.
- Italian torpedo boat Castore, a Spica-class torpedo boat launched in 1936 and sunk in 1943.
- Italian frigate Castore, a Centauro-class frigate launched in 1956 and discarded in 1983.
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.