The SS Irish Oak was an Irish-operated steamship which was sunk in the North Atlantic during World War II by a German submarine. As the West Neris she had been built in the US and operated by the United States Shipping Board. In 1941, she was chartered by Irish Shipping Limited, to transport wheat and fertilizer from North America to Ireland. Sailing as a clearly marked neutral vessel, not in convoy, she was nonetheless torpedoed and sunk by on 15 May 1943 midway between North America and Ireland. The crew were rescued.