The Steinway Lo-V was a New York City Subway car type built from 1915 to 1925 by the Pressed Steel Car Company, American Car and Foundry, and Pullman Company. These cars were built specifically for use on the IRT Corona Line, and the IRT Astoria Line. They had special gear ratios to climb the steep grades (4.5%) in the Steinway Tunnels, something standard IRT equipment could not do.

The World's Fair Lo-V was a New York City Subway car type built in 1938 by the St. Louis Car Company in St. Louis, Missouri. These 50 cars were ordered for the IRT Flushing Line in preparation for the 1939 World's Fair. They were the fourth and last "Lo-V" type cars that were ordered, and the last cars ordered for the IRT before the city takeover in 1940.