Gwion Hallam is a Welsh writer and television presenter from Ammanford (Welsh: Rhydaman), Carmarthenshire. He now lives with his family in Y Felinheli, North Wales. His brother, , won the Chair at the National Eisteddfod in 2010. His book, Creadyn, won the 2006 Best Welsh-Language Book (Secondary Sector) in the Tir na n-Og awards. In 2017, he won the Crown at the National Eisteddfod of Wales. He regularly presents the hymn-singing programme Dechrau Canu, Dechrau Canmol on S4C.