The Pontfadog Oak was a sessile oak tree (Quercus petraea) that stood on Cilcochwyn farm above the village of Pontfadog, in the Ceiriog Valley west of Chirk in the county borough of Wrexham, Wales, until it was blown over in the early hours of 18 April 2013.

[1][2] At the time it was reputed to be the oldest and largest oak tree in the United Kingdom.

[1] In 1996 using Forestry Commission techniques, its age was estimated as between 1,181 and 1,628 years.

[6] In 2013, The Crown Estate propagated a sapling from the original tree and planted it in Windsor Great Park.

[7] A further five saplings have been cloned from the Pontfadog Oak, three of which will be planted at the National Botanic Garden of Wales, with the other two going to sites near Pontfadog; one at Chirk Castle and the other at Erddig, as part of a woodland memorial to those who died during the COVID-19 pandemic.