The ME-1 (also known as MU-1 or MUE-1) was an electric multiple unit subway car built from 1925 to 1926 by the Standard Steel Car Company for the Staten Island Rapid Transit Railway Company and later also used in the New York City Subway.

Purchased by the Staten Island Rapid Transit's former operator, the Baltimore and Ohio Railroad, the cars were built to replace steam-powered equipment on the railroad, and in preparation for the Staten Island Tunnel connection to the BMT Fourth Avenue Line in Brooklyn.

In 1953–54, 25 of these cars were purchased from the SIRT by the New York City Transit Authority to run over former BMT lines and underwent extensive modifications.

Shuttle (never in-through service to Brighton Beach or Coney Island except for put-in or layup trips).

The full fleet was released altogether in August 1959 with the arrival of modified Low-Vs from the IRT Division to operate in those two shuttle services.