- 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.
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