SS Benjamin Harrison was a Liberty ship built in the United States during World War II. She was named after Benjamin Harrison, an American planter and merchant, a revolutionary leader, and a Founding Father of the United States. She served a year from March 1942 to March 1943, when she was attacked and scuttled.

Benjamin Harrison was laid down on 27 September 1941, under a Maritime Commission (MARCOM) contract, MCE hull 26, by the Bethlehem-Fairfield Shipyard, Baltimore, Maryland; and was launched on 24 January 1942.

She was allocated to Calmar Steamship Corporation, on 13 March 1942.

She was loaded with stores for Allied forces in North Africa and sailed from Hampton Roads on 4 March 1943, with Convoy UGS 6. At 20:51, on 16 March 1943, she was struck by two torpedoes fired by German submarine U-172, part of  Wolfpack Unverzagt, during the only successful wolfpack attack on the trans-Atlantic UG convoy. Benjamin Harrison was struck in the #5 hold on the starboard side and began to slowly settle, but did not sink quickly. As the crew began to abandon ship, confusion caused the two of the lifeboats to be improperly launched, allowing the occupants to be dropped into the ocean. Only one lifeboat was launched successfully, due to the last boat being damaged in the torpedo attack. Two officers and an Armed guard perished. The escort ship Rowan scuttled Benjamin Harrison at 21:30, with gunfire, 150 mi (240 km) east northeast of Terceira, Azores, near 39°09′N 24°15′W / 39.150°N 24.250°W / 39.150; -24.250.

• Rohwer, J. and Hummelchen, G. Chronology of the War at Sea 1939–1945 Naval Institute Press 1992 ISBN 1-55750-105-X
• Hague, Arnold The Allied Convoy System 1939–1945 Naval Institute Press 2000 ISBN 1-55750-019-3