Tagapul-an, officially the Municipality of Tagapul-an (; ; ), is a municipality in the province of Samar, Philippines. According to the 2024 census, it has a population of 9,139 people.
It is the furthest municipality from the province's mainland.
The island of Tagapul-an was originally part of the municipality of Almagro. Tagapul-an was established as a municipality of Western Samar on November 15, 1976. It originally consisted of 11 barangays: Baguin, Balocawe, Guimbarocan, Langbaybay, Luna, Mataloto, Nipa, Pantalan, Polangbato, San Vicente, and Sugod, which was designated as the municipal seat of government.
Tagapul-an is politically subdivided into 14 barangays. Each barangay consists of puroks and some have sitios.
The only means of access to Tagapul-an is by motorboat from the port of Calbayog, taking about 2 hours to travel there.