SS John Einig was a Liberty ship built in the United States during World War II. She was named after John Einig, a former resident of Jacksonville, Florida, that had invented the 32-inch (810 mm) steam whistle nicknamed "Big Jim". Einig is also credited with building the first horseless carriage in Jacksonville, in 1896.

John Einig was laid down on 1 December 1943, under a Maritime Commission (MARCOM) contract, MC hull 1220, by the St. Johns River Shipbuilding Company, Jacksonville, Florida; she was sponsored by Helen Wrenn Early, wife of White House Press Secretary Stephen Early, and was launched on 14 January 1944.^[1][2]

She was allocated to the United States Navigation Co., on 31 January 1944. On 7 June 1946, she was laid up in the National Defense Reserve Fleet, Mobile, Alabama. She was sold, 31 December 1946, to Italy, for $544,506, for commercial use. She was removed from the fleet on 3 January 1947. John Einig was renamed Aida Lauro in 1947. She was scrapped in 1969.^[4]