Iorwerth ap Bleddyn (1053–1111) was a prince of Powys in eastern Wales. Iorwerth was the son of Bleddyn ap Cynfyn who was king of both Powys and Gwynedd. When Bleddyn was killed in 1075, Powys was divided between three of his sons, Iorwerth, Cadwgan and Maredudd.
- Occupation
- monarch
- Position held
- Kingdom of Powys
- Born
- 1053
- Died
- 1111
