1. Technology

2. Military

BDF or Bdf may refer to:

• Backward differentiation formula, a numerical method for solving ordinary differential equations
• Ballroom Dancers' Federation
• Beiersdorf AG, a multinational corporation based in Hamburg, Germany
• Berlin Demography Forum, an annual international conference on demographic issues
• Board Feet
• Bois-des-Filion, Quebec
• Bund Deutscher Frauenvereine a German Women's organisation 1894-1933

Technology

• Building Distribution Frame, a type of distribution frame in telecommunications
• PCI BDF (bus/device/function), a range of configurable addresses in PCI configuration space
• Glyph Bitmap Distribution Format, a file format for storing bitmap fonts

Military

• Bangladesh Forces, the combined forces of Bangladesh during its war of independence in 1971
• Bahrain Defense Force, the military of Bahrain
• Barbados Defence Force, the military of Barbados
• Belize Defence Force, the military of Belize
• Botswana Defence Force, the military of Botswana

• The Dog Rescuers with Alan Davies
• The dogs and the lion's skin
• The Dogs (disambiguation)
• The Dogs (film)
• The Dogs of the Dow
• The Dogs of War (Pink Floyd song)
• The Dog that Bit People
• The Dog Trick
• The Dog Who Came in from the Cold
• The Dogwood Papers
• The Dog (wrestler)
• The Dog Yard
• The D'oh-cial Network
• The D'oh-Cial Network
• The DO-IT Center
• The Dolebludgers
• The Doll Doctor
• The Dolley Madison Digital Edition
• The Doll (film)
• The Dollhouse
• The Doll House (episode)
• The Dollhouse Murders
• The Doll Maker of Kiang-Ning
• The Doll Master
• The Dolls (film)