| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Thornton Steward | England | Yorkshire - North | Leyburn | field | No | Ancient 4m-5m | View On Map |
| Thornythwaite Fell | England | Cumbria | Keswick | upland | Yes | Ancient 5m-7m | View On Map |
| Thorpe Mandeville | England | Northamptonshire | Banbury | churchyard | Yes | Ancient 5m-7m | View On Map |
| Three Cocks – Aberllynfi | Wales | Powys | SJ11300248 | former religious site | Yes | Ancient 5m-7m | View On Map |
| Throwley | England | Kent | Faversham | churchyard | Yes | Ancient 4m-5m | View On Map |
| Thryft House Farm | England | Yorkshire - South | Sheffield | garden | No | Ancient 5m-7m | View On Map |
| Thurloxton | England | Somerset | Taunton | churchyard | Yes | Ancient 4m-5m | View On Map |
| Thurnham | England | Kent | Maidstone | churchyard | Yes | Ancient 5m-7m | View On Map |
| Thursley | England | Surrey | Haslemere | churchyard | Yes | Notable | View On Map |
| Ticehurst | England | Sussex - East | Royal Tunbridge Wells | churchyard | Yes | Notable | View On Map |
| Tickenham | England | Somerset | Bristol | churchyard | Yes | Ancient 5m-7m, Notable | View On Map |
| Tiddington | England | Oxfordshire | Oxford | field | No | Notable | View On Map |
| Tidebrook | England | Sussex - East | Royal Tunbridge Wells | footpath/road | Yes | Ancient 5m-7m | View On Map |
| Tidenham | England | Gloucestershire | Chepstow | churchyard | Yes | Notable | View On Map |
| Tidmarsh | England | Berkshire | Reading | churchyard | Yes | Notable | View On Map |
| Tillington | England | Sussex - West | Petworth | churchyard | Yes | Ancient 5m-7m | View On Map |
| Tilmanstone | England | Kent | Deal | churchyard | Yes | Ancient 7m+ | View On Map |
| Tilstock | England | Shropshire | Whitchurch | churchyard | Yes | Lost | View On Map |
| Tilston | England | Wrexham | Wrexham | garden | No | Ancient 5m-7m | View On Map |
| Timberscombe | England | Somerset | Watchet | churchyard | Yes | Ancient 4m-5m | View On Map |