USS Narcissus was a screw steamer launched in July 1863 as Mary Cook at East Albany, New York, United States.

On the morning of 24 August, she captured sloop Oregon in Biloxi Bay, Mississippi Sound, and took the prize to New Orleans for adjudication.

Subsequently ordered to Mobile Bay, Narcissus supported clean-up operations following the great Union naval victory there on 5 August.

Raised in the closing days of 1864, Narcissus was repaired at Pensacola early in 1865 and served in the gulf as a dispatch boat through the end of the war.

She departed Pensacola on New Year's Day 1866, and ran aground during a gale northwest of Egmont Key, Florida on 4 January.