Ysgol Gymraeg Aberystwyth is a Welsh language primary school in the university town of Aberystwyth in Ceredigion, Wales. It was established as a private school in 1939 by Sir Ifan ab Owen Edwards and was originally named Ysgol Gymraeg yr Urdd. The school was the first Welsh-medium school in Wales, the first headteacher being prominent dramatist Norah Isaac.