Owain ap Hywel (died c. 988) was king of Deheubarth in south Wales and probably also controlled Powys.
Upon Hywel's death in 948,[1] Owain, Rhodri, and Edwin divided his lands among themselves according to Welsh law.
In 950, two of the sons of Idwal Foel, Iago and Ieuaf, invaded the south, penetrating as far as Dyfed.
[1] Owain did not again try to reclaim Gwynedd; instead, he and his son Einion turned eastwards to attack the kingdom of Morgannwg (modern Glamorgan) in 960, 970, and 977.
Owain died in 988[3] and Maredudd became king of Deheubarth as well, although he later consented to share his kingdom with Einion's heirs Edwin and Cadell.