By species
By girth
| Location | Girth  | Height  |
 Yarpole, Croft Castle  | 13.00 m | ~11.00 m |
 Defynnog, church St. Cynog | ~11.50 m | ? |
| Cwmdu, farm | 11.00 m | ? |
| Llangattock, Bridge 113 | 10.70 m | ~39.50 m |
| Welshpool, Powis Castle | 7.85 m | ~20.00 m |
| Brecon, Christ's College | 7.00 m | 30.00 m |
| Capel-Y-Finn, cemetery of Capel-Y-Finn | 6.00 m | ? |
| Lake Vyrnwy, Lake Vyrnwy | 4.90 m | 56.00 m |
| Aberyscir, village church | ? | ? |
| Welshpool, Leighton Hall | ? | ? |
| Pencelli, church of Llanfeugan | ? | ? |
= two registered trees
= top of tree lost/damaged by lighting
= not yet confirmed that tree really exists
= measurements older than 15 years
