Llandegla or Llandegla-yn-Iâl is a village in the county of Denbighshire, Wales.
Llandegla is located 253m above sea level to the north-west of the Llandegla Forest, just off the A525 road between Ruthin and Wrexham.
There is an abundance of walking opportunities in Llandegla, indeed one of Wales’ National Trails, the Offa's Dyke Path passes through the village en-route from Chepstow in the south to Prestatyn in the north.
St Tecla’s Well is situated downhill from Llandegla. A signpost indicates the way across a field on the left hand side. Pennant recorded an odd tradition connected with St Tecla's Well. Sufferers of what were known as Clwyf Tecla, "St Tecla's disease", performed a complex ritual which included bathing in the well and making an offering of four pence to the well. Then walking round it three times carrying a chicken whilst reciting the Lord's Prayer.