Salsein

{{Use dmy dates|date=August 2023}}

{{short description|Commune in Occitanie, France}}

{{Infobox French commune

|name = Salsein

|commune status = Commune

|arrondissement = Saint-Girons

|canton = Couserans Ouest

|INSEE = 09279

|postal code = 09800

|mayor = Francis Pujol{{cite web|title=Répertoire national des élus: les maires|url=https://www.data.gouv.fr/fr/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|publisher=data.gouv.fr, Plateforme ouverte des données publiques françaises|date=13 September 2022|language=fr}}

|term = 2020–2026

|intercommunality =

|coordinates = {{coord|42.9103|1.0078|format=dms|display=inline,title}}

|elevation m = 750

|elevation min m = 588

|elevation max m = 1640

|area km2 = 5.73

|population = {{France metadata Wikidata|population_total}}

|population date = {{France metadata Wikidata|population_as_of}}

|population footnotes = {{France metadata Wikidata|population_footnotes}}

}}

Salsein ({{IPA|fr|salsɛ̃}}; {{langx|oc|Salsenh}}) is a commune in the Ariège department in the Pyrenees, in southwestern France.

It is located close to Castillon-en-Couserans, about 17 km south-west of Saint-Girons. It is part of the Ariège Pyrenees regional natural park.

The terrain is mountainous. The Bach, Cazalus and Coudères streams run through Salsein.