| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Nash | Wales | Pembrokeshire | Pembroke | churchyard | Yes | Ancient 5m-7m | View On Map |
| Naworth Castle | England | Cumbria | Carlisle | historic site | No | Ancient 5m-7m | View On Map |
| Necarne Castle | Ireland | Co. Fermanagh | Enniskillen | garden | Yes | Ancient 4m-5m | View On Map |
| Neidpath Castle | Scotland | Scottish Borders | Weymss | castle | Yes | Notable | View On Map |
| Nelson | England | Lancashire | Burnley | parkland | Yes | Notable | View On Map |
| Nercwys | Wales | Flintshire | Mold | churchyard | Yes | Notable | View On Map |
| Nether Alderley | England | Cheshire | Macclesfield | churchyard | Yes | Ancient 5m-7m | View On Map |
| Nether Wallop | England | Hampshire | Stockbridge | footpath/road | No | Ancient 4m-5m, Ancient 5m-7m, Notable | View On Map |
| Netherbury-churchyard | England | Dorset | Beaminster | churchyard | Yes | Ancient 4m-5m | View On Map |
| Netherbury-roadside | England | Dorset | Beaminster | footpath/road | Yes | Ancient 4m-5m | View On Map |
| Netley Heath – nr Gomshall | England | Surrey | Guildford | woodland | Yes | Notable | View On Map |
| Nettlecombe | England | Somerset | Williton | churchyard | Yes | Ancient 4m-5m | View On Map |
| Nettleden | England | Hertfordshire | Berkhamsted | churchyard | Yes | Ancient 4m-5m | View On Map |
| Neuadd Hendidley – Newtown | Wales | Powys | Newtown | garden | No | Notable | View On Map |
| Nevern | Wales | Pembrokeshire | Cardigan | churchyard | Yes | Notable | View On Map |
| New Forest – Anderwood Inclosure | England | Hampshire | Lyndhurst | woodland | Yes | Notable | View On Map |
| New Forest – Bolderwood | England | Hampshire | Ringwood | woodland | Yes | Ancient 4m-5m, Ancient 5m-7m, Notable | View On Map |
| New Forest – Fritham Cross | England | Hampshire | Lyndhurst | heath/common | Yes | Notable | View On Map |
| New Forest – Holly Hatch | England | Hampshire | Ringwood | woodland | Yes | Ancient 4m-5m | View On Map |
| New Forest – Linwood | England | Hampshire | Ringwood | woodland | Yes | Ancient 4m-5m | View On Map |