NW
- nW – (s) Nanowatt
- NW – (s) North-West
- NW – (i) Nuclear Weapon
- NWA – (i) National Wrestling Alliance
- NWF – (i) National Wildlife Federation
- NWFZ – (i) Nuclear-Weapon-Free Zone
- NWHN – (i) U.S. National Women's Health Network
- nWo – (i) New World Order (see article for explanation of idiosyncratic capitalization)
- NWOAHM – (i) New Wave of American Heavy Metal
- NWOBHM – (i) New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
- NWRA – (i) National Wildlife Rehabilitators Association
- NWT – (i) North-West Territories
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