T Train may refer to any of the following:
T (New York City Subway service), a service designation of the New York City Subway T Third Street, a Muni Metro light rail line in San Francisco T Line (Sound Transit), a streetcar in Tacoma, Washington T Line (RTD), a light rail service in Denver, Colorado Massachusetts Bay Transportation Authority, operator of railway systems in Massachusetts popularly referred to as "The T" Pittsburgh Light Rail, also known as "The T"