The R11 was a prototype class of experimental New York City Subway cars built by the Budd Company in 1949 for the IND/BMT B Division.

Originally consisting of 400 cars, only ten R11s were built, due to the cancellation of the Second Avenue Subway.

The R11s were the first stainless steel R-type car built for the New York City Subway.

They went through various modifications, including an overhaul in 1965 that upgraded many components and allowed for compatibility with other SMEE cars.

Fifteen years after the building of the R11s, the Budd Company built the first bulk order of stainless steel cars in New York City Subway history, the R32.

This was due to the influence of noted industrial designer Otto Kuhler (US patent Des.153,367) and featured as part of a bid by the American Car and Foundry Company in 1947.

However, these cars were also built with outside door operating apparatus or controls, along with an exterior mounted Public Address microphone system.

The subway, which was then slated to open in the 1950s, had been repeatedly delayed throughout its history, and the 10 cars ordered were to serve as the newest technology prototype test train available at the time.