Bleddyn
Bleddyn is the name of the following people:
- Bleddyn ap Cynfyn († 1075), King of the Welsh principalities of Powys and Gwynedd
- Cadwgan ap Bleddyn († 1111), Prince of the Welsh Principality of Powys
- Iorwerth ap Bleddyn († 1111), Prince of the Welsh Principality of Powys
- Maredudd ap Bleddyn († 1132), King of the Welsh Principality of Powys
- Bleddyn Williams