Pagalungan is a 1st class municipality in the province of Maguindanao.

According to the 2000 census, it has a population of 25,908 people in 4,715 households.

Pagalungan is politically subdivided into 12 barangays.

Characterized by a more or less even distribution of rainfall throughout the year, the coldest months in the province are December and January. The warm season is from March to June.