The R38 was a New York City Subway car model built by the St. Louis Car Company from 1966 to 1967 for the IND/BMT B Division. Two hundred were built in married pairs. The R38s were built to supply extra trains for service changes resulting from the 1967 opening of the Chrystie Street Connection. The R38 was the second subway car order to be built with stainless steel exteriors, and the first subway car fleet to have air conditioning installed.