Gampaha is an urban city in Gampaha District, Western Province, Sri Lanka. It is situated to the north-east of the capital Colombo. It is the sixth largest urban area in Western Province, after Colombo, Negombo, Kalutara, Panadura and Avissawella. Gampaha is also the second largest municipal centre in Gampaha district, after Negombo. Gampaha has a land area of 25.8 ha (64 acres) and is home to the offices of 75 government institutions.