USS Eucalyptus (YN-11/AN-16) was an Aloe-class net laying ship built for the United States Navy during World War II.

Eucalyptus (YN-11) was launched on 3 July 1941 by General Engineering and Dry Dock Company, Alameda, California; sponsored by Mrs. Romana Jorgenson and placed in service in a noncommissioned status on 9 October 1941, Lieutenant S. B. McDonald, USNR, officer-in-charge.

Initially assigned to the 13th Naval District, Eucalyptus carried out patrol and net-tending operations there until late 1943 when she sailed to Alaskan waters for more of the same duty.

She returned to Seattle, Washington, in July 1944, then was reassigned to duty in the San Francisco Bay area for the duration of World War II.

She was stricken and transferred to the United States U.S. Maritime Administration (MARAD) on 1 September 1962.