DAF

DAF may refer to the following air forces:

Science, nature and technology

Decay accelerating factor, a protein involved in the complement system
Delayed auditory feedback, a device used to delay a person's voice to their own ear, which reduces stuttering and cluttering
Directed attention fatigue, a neurological symptom characterized by the fatigue of the inhibitory attention system
Dissolved air flotation (DAF), a water treatment process
Dwarf African frog
Dynamic amplification factor, a factor of increase of effect over a static load due a dynamic load in structural dynamics

Deutsch-Amerikanische Freundschaft, an electropunk/NDW band from Düsseldorf
"D.A.F." (song), a song by Powderfinger
Daf, a percussive instrument
Diamonds are Forever (film) the seventh official James Bond film starring Sean Connery
Durak Army Finland, a fan club of the Finnish rock band Durak, similar to Turbojugend

United States Department of the Air Force, The military department (i.e. sub-cabinet level component organization of the Department of Defense) within which the United States Air Force is a military service.
Desert Air Force, an RAF formation operating in North Africa during World War II
Defectors from the French army to the ALN défecteurs de l'armée française, a faction within the Algerian army
Deutsche Arbeitsfront or German Labour Front, the state-run amalgamated trade union organization of Nazi Germany

DAF Bus, a Netherlands-based bus builder now known as VDL Bus International
DAF Trucks, a Dutch truck (and formerly automobile) manufacturing company
Delivered At Frontier, an incoterm used when goods are transported by rail and road