Bryn Fôn was born in Llanllyfni, Caernarfonshire. He attended Ysgol Gynradd Llanllyfni and Ysgol Dyffryn Nantlle before going on to study physical exercise and environmental studies at college. He began his career in entertainment by taking part in the opera Dic Penderyn in 1977. He formed the musical group Crysbas after leaving college, and Sobin a'r Smaeliaid in 1988. He was voted the hunk of the month in She magazine during the 1980s.

He began releasing albums with his band under his own name in 1994. He and his band later performed under the name Bryn Fôn a'r Band, releasing music under their own label laBelaBel. He won the song contest Cân i Gymru in 1997, with Un Funud Fach.

In his later career, Fôn has concentrated on appearing on stage and also adapted the play Blackbird for a production by Theatr Bara Caws in which he starred in 2010. At present, he performs with his own band. He is involved with numerous gigs yearly all over Wales, most particularly the Royal Welsh Show and the National Eisteddfod of Wales.