A Train can refer to:

Rail transport

• The A (New York City Subway service)
  • Take the "A" Train, a jazz song celebrating this service
• The former Green Line "A" Branch in Boston, Massachusetts
• A Key System electric rail line that last ran between Oakland and San Francisco, California, in 1958
• Hitachi A-train, a range of trains manufactured by Hitachi, Ltd.
• A-Train AB, the company operating the Arlanda Express service between Stockholm and Arlanda airport
• A-train (Denton County Transportation Authority), a regional commuter rail line in Denton County, Texas
• A-Train, a computer train simulation and city building game series

Sports personalities

A sports nickname for:

• Mike Alstott, American football player
• Matt Bloom, American professional wrestler
• Artis Gilmore, former basketball player
• Anthony Kelly (lacrosse), professional lacrosse player
• Anthony Thomas (American football), American football player
• Anton Volchenkov, ice hockey defenceman
• Aaron Williams, professional basketball player

Other

• A-train (satellite constellation), a string of meteorological and environmental Earth observation satellites

fr:A-Train hu:A-Train (egy rtelm s t lap) ja:A-train pl:A-Train (ujednoznacznienie)