'''A Train''' or the variant '''A-Train''' may mean:
*''A-Train'', a computer game developed by Artdink in 1992
*the A-C_(New_York_City_Subway_service), made famous by the jazz song ''Take the A Train''
*the Green_Line_"A"_Branch in Boston, Massachusetts
*a set of five environmental satellites - see CALIPSO
'''A-Train''' is also a nickname or stagename and may mean:
*Matthew_Bloom (also known as "A-Train"; born 1972), a professional wrestler who was formerly known has Albert.
*Devon_Hughes (also known as "A-Train"; born 1972), a professional wrestler who was formerly known has D-Von Dudley.
*Anthony_Thomas_(football) (nicknamed "A-Train"; born 1977), a professional American football player
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