BDU may refer to:

Airports

• Bardufoss Airport (IATA code: BDU), northern Norway

• Boulder Municipal Airport (FAA LID: BDU), Colorado, US

Education

• Bahir Dar University, Ethiopia

• Baku State University, Azerbaijan

• Bharathidasan University, Tamil Nadu, India

• Brown Debating Union, Brown University, Rhode Island, US

Military

• Battle Dress Uniform, historical American camo

• Befehlshaber der U-Boote, head of the German Navy's U-Boat arm in WWI and WWII

Other uses

• B.D.U, a South Korean boy band

• Bizkaia–Durango, a cycling team based in Spain

• Broadcast distribution undertakings, the legal term for Canadian multichannel television providers

• Oroko language, spoken in Cameroon (ISO 639-3:bdu)

• Data Security Threats Database (BDU), a Russian software vulnerability database