D33, D.33 or D-33 may refer to:

Ships

* '' Almirante Garcia'', an ''Almirante Clemente''-class destroyer of the Venezuelan Navy * , a ''Fletcher''-class destroyer of the Brazilian Navy * , a County-class heavy cruiser of the Royal Australian Navy * , a D-class destroyer of the Royal Navy

Other uses

* Akaflieg Darmstadt D-33, a German experimental glider * D33 road (Croatia) * Dewoitine D.33, a French single-engined monoplane * LNER Class D33, a class of British steam locomotives *

Tarrasch Defense The Tarrasch Defense is a chess opening characterized by the moves: :1. b:Chess Opening Theory/1. d4, d4 b:Chess Opening Theory/1. d4/1...d5, d5 :2. b:Chess Opening Theory/1. d4/1...d5/2. c4, c4 b:Chess Opening Theory/1. d4/1...d5/2. c4/2...e6, e ...

, a chess opening {{Letter-Number Combination Disambiguation