Iestyn
# Iestyn

Iestyn is a masculine given name. Notable people with the name include:

* Iestyn (saint), Welsh saint of the 6th or 7th centuries
* Justinian of Ramsey Island, 6th-century hermit
* Iestyn Davies, British opera singer
* Iestyn ap Gwrgant (1045–1093), the last ruler of the Welsh kingdom of Morgannwg
* Iestyn Edwards, stage and TV writer/performer, published poet and journalist
* Iestyn Harris (born 1976), Welsh professional rugby league footballer
* Iestyn Thomas (born 1976), Welsh rugby union footballer
* Rhydderch ap Iestyn (died 1033), king of Gwent and Morgannwg in south Wales
