Ysgol Gyfun Gymunedol Penweddig is a Welsh-language, community comprehensive school situated in Llanbadarn Fawr, Aberystwyth, Wales. The school was established in 1973. The school was the first Welsh language secondary school in Ceredigion and is named after the cantref of Penweddig, the northern part of the Kingdom of Ceredigion, between the rivers Dyfi and Ystwyth.