Olchfa School (Welsh: Ysgol Gyfun yr Olchfa) is the largest comprehensive school in Swansea, South Wales, with approximately 1,700 pupils, including 357 in the Sixth Form. Situated in Sketty Park to the west of Sketty, it provides secondary education for GCSE and A-Level qualifications. Olchfa (part of the Sketty Swansea suburb) means 'washing place' in the English language.