Ysgol Gyfun Gymraeg Llangynwyd is a Welsh-medium secondary school for pupils aged between 11 and 18.

The school is based in the village of Llangynwyd in the borough of Bridgend, Wales.

It is the only secondary school in the borough of Bridgend to use the Welsh language as the primary medium of education.

These houses represent the main valleys and rivers that form the catchment area of the school.

This changes when the pupils move onto the sixth form, where the four houses are instead Lluest, Ffaldau, Cwmdu, and Garth, which represent other various locations in South Wales.