List of Famous people with last name Llywelyn

Carmen Llywelyn, also known as Carmen Lee, is an American actress and photographer.

Madog ap Llywelyn was the leader of the Welsh revolt of 1294–95 against English rule. The revolt was surpassed in longevity only by the revolt of Owain Glyndŵr in the 15th century. Madog belonged to a junior branch of the House of Aberffraw and was a distant relation of Llywelyn ap Gruffudd, the last recognised native Prince of Wales.

Dafydd ap Llywelyn was Prince of Gwynedd from 1240 to 1246. He was the first ruler to claim the title Prince of Wales.

Gruffydd ap Llywelyn was king of Wales from 1055 to 1063, he united the whole of Wales in 1057. He was the son of King Llywelyn ap Seisyll and Angharad, daughter of Maredudd ab Owain. He was the great-great-grandson of Hywel Dda. Gruffydd ap Llywelyn is considered to be the first and last king of Wales.