Ynyswen

Ynyswen (Welsh pronunciationⓘ; meaning White island) is a village in the community of Treorchy, in the county borough of Rhondda Cynon Taf, Wales.

It was rebuilt in 1912 in a new location along the Rhondda River and closed in 2014 with the children to attend the newly built Penyrenglyn Primary School.

Ysgol Gynradd Gymraeg Ynyswen is a Welsh primary school, established in 1950, that serves the upper Rhondda Valley.

After leaving pupils attend Ysgol Gyfun Gymraeg Cwm Rhondda in Cymer, 5 miles down the valley.

On 5 March 2021 an incident, centred on a take-away restaurant in the village, led to the death of a 16-year-old girl and the arrest of two men, who had themselves suffered serious injuries.