The House of Aberffraw was a medieval royal court based in the village it was named after, Aberffraw, Anglesey within the borders of the then Kingdom of Gwynedd. The dynasty was founded in the 9th century by a King in Wales whose descendants founded the Welsh Royal Houses. The other medieval Welsh dynasties were the Royal Houses of Dinefwr, Mathrafal.

Aberffraw is a village and community on the south west coast of the Isle of Anglesey in Wales. The village is 9 miles from the island's county town, Llangefni, and is located on the west bank of the Afon Ffraw. The community includes Soar and Dothan. Located near the A4080 and the nearest rail station is Bodorgan.