Dafydd Iwan Jones (born 24 August 1943) is a Welsh folk singer and politician. He was the president of Plaid Cymru from 2003 to 2010. He first rose to fame as a singer-songwriter of folk music in the Welsh language.
Iwan was born in Brynamman (Welsh: Brynaman), Carmarthenshire. His brothers include actor Huw Ceredig (1942–2011) and politician Alun Ffred Jones.
