USS ''Orca'' has been the name of more than one United States Navy ship, and may refer to:
* , a submarine in commission from 1914 to 1923 that was named USS ''Orca'' (SS-34) until renamed ''K-3'' in 1911 while under construction
* , a patrol vessel in commission from 1917 to 1918
* , a submarine in commission from 1943 to 1946 and in 1963 that prior to being laid down on 12 March 1943 was projected to be named USS ''Orca'' (SS-381), her name being changed to USS ''Ojanco'' (SS-381) on 5 September 1942 and finally to USS ''Sand Lance'' (SS-381) on 24 September 1942
* , a seaplane tender in commission from 1944 to 1947 and from 1951 to 1960
{{DEFAULTSORT:Orca
United States Navy ship names