SS West Elcajon (often misspelled West El Cajon) was a steel-hulled cargo ship built in 1918 for the United States Shipping Board's World War I emergency wartime shipbuilding program. Completed just too late to see service in the war, West Elcajon was nevertheless commissioned into the U.S. Navy as USS West Elcajon (ID-3907), participating in one postwar famine relief mission to Eastern Europe before decommissioning in May 1919. In 1938, the ship was renamed SS Waipio, and in 1946 she was sold to Panamanian interests and renamed SS Paralos. Paralos was scrapped in Japan in 1954.