USS Buckthorn (YN-9/AN-14) was an Aloe-class net laying ship built for the United States Navy during World War II.

Originally ordered as USS Dogwood (YN-3), she was renamed and renumbered to Buckthorn (YN-9) before construction began in December 1940.

The second ship to be so named by the Navy, Buckthorn (YN-9) was laid down on 5 December 1940 at Alameda, California, by the General Engineering & Drydock Co.; launched on 27 March 1941; sponsored by Mrs. Rosalie Benton Day; and placed in service at the Mare Island Navy Yard on 16 September 1941.

She arrived at San Pedro, California, on the 20th and reported for duty as a unit of the net defenses and inshore patrol.

On the latter day, Buckthorn headed back to Amchitka where she served during the period 17 April to 5 June.

After a leisurely voyage that included lengthy stops at Dutch Harbor, Kodiak, and Seattle, the net tender arrived in San Diego, California, at the end of the first week in August.

On 20 August 1947, Buckthorn was decommissioned and berthed with the San Diego Group, Pacific Reserve Fleet.

Her name was struck from the Navy List on 1 July 1963, and she was transferred to the U.S. Maritime Administration to be berthed with the Suisun Bay facility of its National Defense Reserve Fleet.