D9, D09, D.IX, D IX, D.9 or D-9 may refer to:
Transport and vehicles Albatros D.IX, a 1918 German prototype single-seat fighter Bavarian D IX, an 1888 German steam locomotive model Bottineau Municipal Airport, FAA LID D09, a public airport in North Dakota, United States BHP Port Kembla D9 class, a class of Australian diesel-electric locomotives Caterpillar D9, a 1954 large bulldozer/track-type tractor IDF Caterpillar D9, an armored bulldozer Denza D9, a minivan by BYD Auto Donavia, IATA code D9, a former subsidiary of Aeroflot D9 road (Croatia), a state road in Croatia HMS D9, a 1912 British E class submarine HMS Imperial (D09), a 1936 British Royal Navy I-class destroyer HMS Trumpeter (D09), a 1942 British Royal Navy escort aircraft carrier Jodel D9, a 1948 French single-seat ultralight monoplane LNER Class D9, a class of British steam locomotives
Other uses Delta-9-THC, the delta-9 isomer of THC ATC code D09, Medicated dressings, a classification for medical products D-9 (video), a video format also known as Digital-S D9-brane, a class of objects in string theory D-IX, a Nazi performance-enhancing drug District 9, a 2009 film The "Divine Nine" (D9), nickname for the National Pan-Hellenic Council, an African American fraternities and sororities council Dublin 9, a Dublin, Ireland postal district Digital 9, a collaborative network of the world's leading digital governments Diensteinheit IX - a military unit of the East German police the Volkspolizei
See also 9D (disambiguation) Dix (disambiguation)