Ordnance Survey Abbreviations and Acronyms
- NONCONFNonconformist
- NOPNovember
- NORNorth
- NORFNorfolk
- NORTHAMPTONSHNorthamptonshire
- NORTHAMTSNorthamptonshire
- NORTHANTSNorthamptonshire
- NORTHUMBNorthumberland
- NORTHUMBLDNorthumberland
- NOSNumber
- NOTTSNottinghamshire
- NOVNovember
- NRNumber
- NSNot Square
- NTHNorth
- NTLNormal Tidal Limit
- NTSNational Trust for Scotland
- NUMNumber
- OBSYObservatory
- OCAKJanuary
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