Ysgol Gyfun Gymunedol Penweddig (Penweddig Community Comprehensive School in English) is a Welsh-language, community comprehensive school situated in Llanbadarn Fawr, Aberystwyth, Wales.

[1] 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.

[3] In 2024, 60.4% of statutory school age pupils spoke Welsh at home.

In October 2001, following a lengthy consultation with parents, staff and pupils, the school moved to its current home in Llanbadarn Road.

It comprises two representatives from every school year (one male; one female) elected by the whole of the respective year, and two permanent members representing the local youth service (also pupils).