R17 (New York City Subway car)
 The R17 is a New York City Subway car class built in 1954 by the St. Louis Car Company. It was one of three car classes purchased in the mid-1950s by the New York City Transit Authority to replace much of the pre-World War II IRT High Voltage (Hi-V) rolling stock which included the Gibbs cars the Deck Roofs and the Hedley Hi-V cars.