| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Garthbrengy – smaller yews | Wales | Powys | Brecon | churchyard | Yes | Ancient 4m-5m, Notable | View On Map |
| Gartheli | Wales | Ceredigion | Lampeter | churchyard | Yes | Lost | View On Map |
| Gartochraggan | Scotland | West Dunbartonshire | Alexandria | footpath/road | Yes | Notable | View On Map |
| Garvagh | Ireland | Co. Londonderry | Coleraine | estate | No | Ancient 4m-5m | View On Map |
| Garway – churchyard | England | Herefordshire | Ross-on-Wye | churchyard | Yes | Ancient 4m-5m | View On Map |
| Garway Common | England | Herefordshire | Monmouth | heath/common | Yes | Notable | View On Map |
| Gavelacre | England | Hampshire | Andover | boundary | No | Ancient 4m-5m | View On Map |
| Gawsworth | England | Cheshire | Macclesfield | churchyard | Yes | Ancient 4m-5m | View On Map |
| Gawtons Well – Knypersley | England | Staffordshire | Biddulph | woodland | Yes | Notable | View On Map |
| Gayhurst House | England | Buckinghamshire | Milton Keynes | estate | No | Notable | View On Map |
| Gayton | England | Staffordshire | Stafford | churchyard | Yes | Ancient 4m-5m | View On Map |
| Gelligaer | Wales | Caerphilly | Caerphilly | churchyard | Yes | Ancient 5m-7m | View On Map |
| Gilgarran | England | Cumbria | Workington | woodland | No | Ancient 4m-5m | View On Map |
| Gillingham | England | Dorset | Shaftesbury | churchyard | Yes | Notable | View On Map |
| Gisay-la-Coudre | France | Eure - Normandie | Bernay | churchyard | Yes | Ancient 4m-5m | View On Map |
| Gladestry – church | Wales | Powys | Kington | churchyard | Yes | Ancient 5m-7m | View On Map |
| Gladestry – Yew Tree Bank | Wales | Powys | Kington | field | No | Ancient 4m-5m | View On Map |
| Glamis Castle | Scotland | Angus | Forfar / Dundee | parkland | Yes | Ancient 5m-7m | View On Map |
| Glasbury | Wales | Powys | Hay-on-Wye | churchyard | Yes | Ancient 4m-5m, Ancient 5m-7m, Notable | View On Map |
| Glasbury – lost church | Wales | Powys | Hay-on-Wye | churchyard | No | Lost | View On Map |