Owain ap Gruffydd
Owain ap Gruffydd is the name of:
- Owain ap Gruffydd, real name of Owain Gwynedd (around 1100-1170 ), King of Gwynedd
- Owain ap Gruffydd, real name Owain Cyfeiliog (around 1130-1197 ), Prince of Powys Wenwynwyn
- Owain ap Gruffydd († 1236 ), Lord of Deheubarth
- Owain ap Gruffydd (c. 1355 to 1416), the Welsh national hero, Owain Glyndŵr see
- Disambiguation