Clase is a suburban district of the City and County of Swansea, Wales falling within the Mynydd-Bach ward. Clase approximates to the housing area south of Clasemont Road between Morriston and Llangyfelach.
A local landmark of Clase is the 16 storey Driver and Vehicle Licensing Agency building, situated on top of the hill where Clase is located and visible from several miles away.
Along with the DVLA building, Clase also had a number of high rise tower block flats. These have now been replaced by various things such as low-rise housing,a multi-use sports pitch and an open green.
Clase is in a Communities First area together with Caemawr under the designation of Clase & Caemawr Communities First Partnership.