Pagsanghan, officially the Municipality of Pagsanghan (; ), is a municipality in the province of Samar, Philippines. According to the 2024 census, it has a population of 8,145 people.
The municipality of Pagsanghan was established by virtue of Batas Pambansa Blg. 16 issued on February 9, 1979, upon separation of nine barangays in Tarangnan, with a barangay with the same name the seat of government. A plebiscite was held on April 3.
Pagsanghan is politically subdivided into 13 barangays. Each barangay consists of puroks and some have sitios.