Bryn Celynnog Comprehensive School is an 11–18 mixed, English-medium, community secondary school and sixth form in Beddau, Rhondda Cynon Taf, Wales. As of March 2023, it had 1319 on roll which included 185 in the sixth form.

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Built as the Beddau Girls School and dated 1928. One of a series of schools with similarities in style by the Glamorgan County Architect, D Pugh Jones. This example is relatively small for a secondary school, perhaps because it was for girls only. Shown on an Ordnance Survey map of 1948 with the same E-shaped plan as today. A dotted line is shown across the rear, perhaps representing a fence which would have bounded a courtyard. It is possible that a rear range was planned but not built.

• Ellis Jenkins, rugby union player
• Gethin Jenkins, rugby union player
• Neil Jenkins, rugby union player and coach
• Adrian Lewis Morgan, actor
• Kelly Morgan, badminton player
• Michael Owen, rugby union player
• David Roberts, swimmer
• Joel James, Welsh politician

• Paul John, former PE teacher

• Official website