abbr.	US National Bureau of Standards	NBS (from 1988 - NIST)
		abbr.	National Collegiate Athletic Association	NCAA
		abbr.	National Coal Board	NCB
		abbr.	Network Connect Block	NCB
		abbr. comp.	Network Contro Center	NCC
		abbr. relig.	National Council of Churches	NCC
		abbr.	National Conference of Christians and Jews	NCCJ
		abbr. med.	National Cancer Institute	NCI
		abbr. comp.	National Centre for Supercomputing Applications	NCSA
		abbr. comp.	National Computer Security Association, before 1985 - CSC	NCSA
		abbr.	National Computer Security Centre	NCSC
		abbr.	Network Control Utility	NCU
		abbr.	Non-Destructive Readout	NDR
		abbr. phys.	Negative Differential Resistance	NDR
		abbr. geogr.	NE	Nebraska
		abbr.	National Education Association	NEA
		abbr.	National Endowment for the Arts	NEA
		abbr.	Nuke Encryption Device	NED (Polymorphic Generator)
		abbr.	National Economic Development Council/Office	NEDO
		abbr.	Net Export of Goods and Services	NEGS
		abbr.	National Endowment for the Humanities	NEH
		abbr. geogr.	Nepal	Nep.
		abbr. geogr.	Netherlands	Neth.
		abbr.	National Football Conference	NFC
		abbr.	National Football League	NFL
		abbr.	National Farmers Organization	NFO
		abbr.	New Font Selection Scheme	NFSS
		abbr.	Network File Transfer	NFT
		abbr.	National Farmers Union	NFU
		abbr. med.	NG	nasogastric
		abbr. astr.	New General Catalog	NGC (Drayer catalog)
		abbr. astr.	Next Generation Space Telescope	NGST
		abbr. med.	National Heart Blood Lung Institute	NHLBI
		abbr.	Network Interconnect	NI
		abbr. geogr.	Nicaragua	Nic.
		abbr.	Network Information and Control Exchange	NICE
		abbr.	Notation Interchange File Format	NIFF
		abbr. geogr.	Nigeria	Nig.
		abbr.	Near-Infrared Mapping Spectrometer	NIMS
		abbr. comp.	New Image Transition Format	NITF
		abbr.	New Jersey Institute of Technology	NJIT
		abbr.	National League	NL (baseball)
		abbr.	NewLine character	NL
		abbr. lat.	non licet	nl (not permitted)
		abbr. lat.	non liquet	nl (it is not clear)
		abbr. lat.	non longe	nl (not far)
		abbr. phys.	Non-Linear Chromatography	NLC (or the corresponding peak function of the same name)
		abbr. phys.	Non-Linear Capacitance	NLC
		abbr. med.	National Library of Medicine	NLM
		abbr.	Network Licensing System	NLS
		abbr.	NonMaskable Interrupt	NMI
		abbr. tech.	Nordic Mobile Telephones	NMT
		abbr.	note, notes	nn. (footnote, footnotes)
		abbr. econ.	Nuclear Non-Proliferation Act	NNPA
		abbr. econ.	Nuclear Non-Proliferation Treaty	NNPT
		abbr. astr.	National Optical Astronomy Observatories	NOAO
		abbr. med.	night	noc
		abbr.	nominative	nom. (case)
		abbr.	it does not follow	non seq.
		abbr.	NO-OPeration instruction	NO-OP
		abbr. astr. lat.	Norma	Nor (the Square, Наугольник)
		abbr. geogr.	Northamptonshire	Northn.
		abbr.	Network OS	NOS
		abbr.	National Organization for Women	NOW
		abbr.	National Physics Laboratory	NPL
		abbr.	Numeric Processor Unit	NPU
		abbr.	near	nr
		abbr.	National Recovery Administration	NRA
		abbr.	National Rifle, Association of America	NRA
		abbr.	Nuke Random Life Generator	NRLG
		abbr. med.	NS	normal saline
		abbr.	US National Security Agency	NSA
		abbr.	Network Security Architecture and Design	NSAD
		abbr. comp.	NATO Secondary Image Format	NSIF
		abbr. astr.	National Space Science Data Centre	NSSDC
		abbr.	National Severe Storms Forecast Centre	NSSFC
		abbr.	Northwest Territories	NT
		abbr. comp.	New Typesetting System	NTS
		abbr. tech.	Nippon Telegraph and Telephone Corporation	NTT
		abbr.	Not-Uniform Rational B-Spline	NURBS
		abbr.	NonVolatile RAM	NV RAM
		abbr.	no value declared	nvd
		abbr. comp.	Network Voice Protocol	NVP
		abbr. comp.	No Visible Porosity	NVP
		abbr. geogr.	New York City	NY
		abbr. med.	New York Heart Association	NYHA
		abbr.	origin	o.
		abbr.	originated	o.
		abbr.	Order of the British Empire	O.B.E.
		abbr.	outward cargo	o.c.
		abbr.	Order of Friars Minor	O.F.M. (Franciscans)
		abbr.	Order of Preachers	O.P. (Dominicans)
		abbr.	old series	o.s.
		abbr.	Old Style	O.S. (Julian calendar)
		abbr.	Order of Saint Benedict	O.S.B.
		abbr.	old account	o.a.
		abbr.	on account	o.a.
		abbr.	open account	o.a.
		abbr.	overcharge	o/c
		abbr.	overdraft	o/d

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