Altair was the name of at least two ships of the Italian Navy and may refer to:
- Italian torpedo boat Altair, a Spica-class torpedo boat launched in 1936 and sunk in 1941.
- Italian frigate Altair (F 591), a Cannon-class destroyer escort launched in 1943 as USS Gandy. Transferred to Italy and renamed in 1951. Re-rated as a frigate in 1957 and sunk as a target in 1971.
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.