def

• Def (instrument), a Middle Eastern musical instrument
• DEF II, a British youth TV programme
• Def American, a rock and rap record label
• Def Jam Recordings, a rap record label
• Def Jux, a rap record label
• Def Leppard, a British hard rock band
• So So Def Recordings, a rap record label

• def, a keyword in Python and PostScript
• Danish EL-Federation, Danish trade union for electricians
• Design Exchange Format, or DEF
• {{lang|de|Deutsche Emaillewaren-Fabrik}}, or DEF, Oskar Schindler's Enamel Factory in Kraków, Poland
• Diesel exhaust fluid, or DEF, also known as AdBlue or AUS 32
• Disarmed Enemy Forces, or DEF
• Diethylformamide, an organic solvent

• Mos Def, a rap artist
• Def Jef, a rap artist

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• {{srt|1}}
• Defcon (disambiguation)
• Deaf (disambiguation)

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