Dematagoda Grama Niladhari Division is a Grama Niladhari Division of the Thimbirigasyaya Divisional Secretariat of Colombo District of Western Province, Sri Lanka. Dematagoda and Veluwana College are located within, nearby or associated with Dematagoda. Dematagoda is a surrounded by the , Grandpass South, , , and Wanathamulla Grama Niladhari Divisions.