| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Tolquhon Castle | Scotland | Aberdeenshire | Aberdeen | castle | Yes | Notable | View On Map |
| Ton-yr-ywen | Wales | Cardiff | Cardiff | historic site | Yes | Lost | View On Map |
| Tonbridge – A21 road widening | England | Kent | Tonbridge | garden | No | Lost | View On Map |
| Tonge | England | Kent | Sittingbourne | churchyard | Yes | Ancient 4m-5m | View On Map |
| Torbryan | England | Devon | churchyard | Yes | Ancient 4m-5m | View On Map | |
| Torce | Spain | Asturias | Teverga Valley | churchyard | Yes | Notable | View On Map |
| Tormarton | England | Gloucestershire | Bristol | churchyard | Yes | Notable | View On Map |
| Torver | England | Cumbria | Coniston | churchyard | Yes | Ancient 4m-5m | View On Map |
| Torwoodlee | Scotland | Falkirk | Stirling | former religious site | No | Notable | View On Map |
| Tottenham House | England | Wiltshire | Marlborough | estate | No | Ancient 7m+ | View On Map |
| Totteridge | England | Greater London | Barnet | churchyard | Yes | Ancient 7m+ | View On Map |
| Tourner Bury Hill Fort | England | Hampshire | Havant | historic site | No | Lost | View On Map |
| Tourville-sur- Odon | France | Calvados - Normandie | Caen | churchyard | Yes | Notable | View On Map |
| Touville | France | Eure - Normandie | Bourg-Achard | churchyard | Yes | Ancient 5m-7m | View On Map |
| Towcester | England | Northamptonshire | Northampton | churchyard | Yes | Notable | View On Map |
| Townend – National Trust | England | Cumbria | Ambleside | garden | Yes | Lost, Notable | View On Map |
| Traquair House | Scotland | Scottish Borders | Innerleithin | garden | Yes | Notable | View On Map |
| Trealy | Wales | Monmouthshire | Monmouth | woodland | No | Ancient 5m-7m | View On Map |
| Tredunnock | Wales | Monmouthshire | Newport | churchyard | Yes | Ancient 5m-7m | View On Map |
| Trefeglwys | Wales | Powys | Newtown | churchyard | Yes | Ancient 4m-5m, Ancient 5m-7m, Ancient 7m+ | View On Map |