T33 or T-33 may refer to:
Automobiles Alfa Romeo Tipo 33, an Italian racing car Bestune T33, a Chinese SUV Cooper T33, a British sports car
Aviation Canadair T-33, a Canadian jet trainer Flader T33, an American turbojet engine Lockheed T-33, an American jet trainer
Other uses T33 (classification), a disability sport classification
Kire-Uriwari Station, Osaka, Japan London Buses route T33
T-37A tank, a Soviet light tank