Sub-provinces of the Philippines

Sub-provinces of the Philippines
Map of the Mountain Province showing its extent in 1918. The map shows borders of its sub-provinces.
Category	Province sub-unit
Location	Philippines
Found in	Provinces
Subdivisions	Municipalities and component cities

The sub-provinces of the Philippines were a political and administrative division of the Philippines. The sub-provinces were a part of a larger "regular" province and residents of a sub-province participated in provincial elections of the parent province.