T54 may refer to:
Tanks T-54, a Soviet tank T54 (American tank), a prototype American tank
Automobiles Cooper T54, a British racing car Lola T54, a British racing car Tatra 54, a Czechoslovak automobile
Other uses T54 (classification), a disability sport classification T54 (road), a former trunk road in Ireland Textron T-54A Marlin II, a U.S. Navy version of the Beechcraft Super King Air 260 aircraft