Three ships of the United States Navy have been named Canopus after the first magnitude star Canopus in the constellation Argo.

• USS Canopus (AS-9) was launched in 1919 by the New York Shipbuilding Company as the Santa Leonora.
• USS Canopus (AD-33) (ordered as AS-27, but reclassified before keel-laying) was a destroyer tender, but construction was canceled in 1945 prior to launching.
• USS Canopus (AS-34) was launched on 12 February 1965.

•  This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.

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.