Olchfa School is a pioneer school and the largest secondary 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 means 'washing place' in the English language.

The suburban district of Sketty is about 2 miles (3.2 km) west of the Swansea city centre on Gower Road. It falls within the Sketty council ward of Swansea. It is also a community.