NG
- ng – (s) Nanogram – Ndonga language (ISO 639-1 code)
- NG
- (i) Natural Gas
- Next Generation
- (s) Niger (FIPS 10-4 country code)
- Nigeria (ISO 3166 digram)
- NGA
- (i) National Geospatial-Intelligence Agency
- (s) Nigeria (ISO 3166 trigram)
- NGH – Northern General Hospital
- NGATS – (i) New Generation Army Targetry System
- NGIC – (a) National Ground Intelligence Center ("Injick")
- NGN – (s) Nigerian naira (ISO 4217 currency code)
- NGO – (i) Non-Governmental Organization
- NGR – (s) Nigeria (IOC trigram, but not ISO 3166 or FIFA)
- NGS – (i) Naval Gunfire Support
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