Ieuan
Ieuan is one of several Welsh forms of the male given name John.- Saint Ieuan, 6th-century saint, there is a church dedicated to him in Llantrisant on the Isle of Anglesey.
- Ieuan ab Owain Glyndŵr, reputed illegitimate son to Owain Glyndŵr, the last native Prince of Wales.
- Ieuan ap Hywel Swrdwal, Welsh poet – first recorded Welshman to write an English poem.
- Ieuan Gethin ap Ieuan ap Lleision, poet from Glamorgan.
- Ieuan Brydydd Hir, poet and singer from Meirionnydd
- Ieuan Dyfi, Welsh poet
- Ieuan Gwyllt, bardic name of musician and minister John Roberts.
- Ieuan ap Iago bardic name of Evan James, poet – famous for writing the lyrics of Hen Wlad fy Nhadau, the national anthem of Wales. The music was written by his son James James.
- Ieuan Williams, Welsh cricketer – wicketkeeper for Glamorgan.
- Ieuan Rhys Williams, radio and television actor – starred in a number of films including Noson Lawen.
- Ieuan Wyn Pritchard Roberts, Baron Roberts of Conwy, PC, Welsh Conservative politician.
- Ieuan Wyn Jones, AM, former Deputy First Minister for Wales, and leader of Plaid Cymru.
- Ieuan Rhys, Television and stage actor.
- Ieuan Evans, former rugby union wing for Wales and the Lions. Rugby correspondent for Sky Sports
- Ieuan Lloyd, professional swimmer.
