Langiden, officially the Municipality of Langiden (; ), is a municipality in the province of Abra, Philippines. According to the 2024 census, it has a population of 3,457 people.
According to the Philippine Statistics Authority, the municipality has a land area of constituting of the total area of Abra. It is located at .
Langiden is situated from the provincial capital Bangued, and from the country's capital city of Manila.
Langiden is politically subdivided into 6 barangays. Each barangay consists of puroks and some have sitios.
In the 2024 census, Langiden had a population of 3,457 people. The population density was .
Langiden, belonging to the lone congressional district of the province of Abra, is governed by a mayor designated as its local chief executive and by a municipal council as its legislative body in accordance with the Local Government Code. The mayor, vice mayor, and the councilors are elected directly by the people through an election which is being held every three years.
The Langiden Schools District Office governs all educational institutions within the municipality. It oversees the management and operations of all private and public, from primary to secondary schools.