USS Henry R. Mallory (ID-1280) was a transport for the United States Navy during World War I. She was also sometimes referred to as USS H. R. Mallory or as USS Mallory. Before her Navy service she was USAT Henry R. Mallory as a United States Army transport ship. From her 1916 launch, and after her World War I military service, she was known as SS Henry R. Mallory for the Mallory Lines. Pressed into service as a troopship in World War II by the War Shipping Administration, she was torpedoed by German submarine U-402 in the North Atlantic ocean and sank with the loss of 272 men—over half of those on board.