Tonglayan is a barangay of the philippine municipality Natonin in the province Mountain Province in Cordillera Administrative Region which is part of the Luzon group of islands. The municipality Natonin with a population of about 9,431 and its 11 barangays belongs to the rural areas in the Philippines. Tonglayan had 1,164 residents by the end of 2007.
Tonglayan belongs to the barangays of Municipality Natonin which are in the outlying area.
Other barangays of Natonin are: