USS ''Porpoise'' has been the name of more than one United States navy ship, and may refer to:
* , a schooner built in 1820 and wrecked in 1833
* , a brig in commission from 1836 to 1847, from 1848 to 1852, and from 1853 until lost in 1854
* , a submarine in commission from 1903 to 1919, renamed USS ''A-6'' in 1911
* USS ''Porpoise'' (YFB-2047), steamer in commission from 1918 to 1930, originally named
* , a submarine in commission from 1935 to 1945
* , a patrol yacht acquired by the United States Navy in 1917.
{{DEFAULTSORT:Porpoise
United States Navy ship names