A33, A 33 or A-33 may refer to :
- Douglas A-33, a 1941 American ground-attack fighter aircraft
- A33 Excelsior British heavy tank prototype
- HLA-A33, a human serotype
- Samsung Galaxy A33 5G, an Android smartphone
and also :
- One of the Encyclopaedia of Chess Openings codes for the English Opening in chess
Roads
edit- A33 road (England), a road connecting Reading and Southampton
- A33 motorway (France), a road connecting Nancy and Dombasle-sur-Meurthe
- A 33 motorway (Germany), a road connecting the A 30 in the north and the A 44 in the south
- A33 motorway (Italy), a road under construction connecting Asti and Cuneo
- A33 motorway (Spain), a proposed road in Murcia connecting Cieza and Font de la Figuera
- A33 road (Sri Lanka), a road connecting Ja Ela-Ekala-Gampaha-Yakkala
- A33 road (Botswana), a road in Botswana.