Naf

Related to the Closed World Assumption.
Netherland-America Foundation supports exchange between the United States and The Netherlands.
Neunkirchner Achsenfabrik a manufacturer of axles
New America Foundation a Washington DC based think tank
Nigerian Air Force
Non-adjacent form in mathematics.
Norges Automobil-Forbund (Norway), a member of the FIA.
North Anatolian Fault - Turkey
Northwest Anarchist Federation
Norsk Arbeidsmandsforbund, the Norwegian Union of General Workers
Numbered Air Force in the United States Air Force.
NaF is also the chemical formula for sodium fluoride.
NaF is also the name given to a certain lifestyle group.