Class 2900 or 2900 class may refer to:
Bangladesh Railway Class 2900, a diesel-electric locomotive GWR 2900 Class, a UK steam locomotive NS Class 2900 (1956), a Dutch diesel locomotive NS Class 2900 (Sprinter), a Dutch electric multiple-unit train IÉ 29000 Class, an Irish diesel multiple unit Santa Fe Class 2900, a US steam locomotive