Castanet, Tarn

{{Infobox French commune

|name = Castanet

|image = Castanet (Tarn), june 2016 - 3389.jpg

|caption = Saint-André Church in Castanet

|commune status = Commune

|arrondissement = Albi

|canton = Les Deux Rives

|INSEE = 81061

|postal code = 81150

|mayor = Max Escaffre{{cite web|title=Répertoire national des élus: les maires|url=https://www.data.gouv.fr/fr/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|website=data.gouv.fr, Plateforme ouverte des données publiques françaises|date=2 December 2020|language=fr}}

|term = 2020–2026

|intercommunality = CA Gaillac-Graulhet

|coordinates = {{coord|43.9758|2.0303|format=dms|display=inline,title}}

|elevation m = 270

|elevation min m = 188

|elevation max m = 302

|area km2 = 7.21

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

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

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

}}

Castanet is a commune in the Tarn department in southern France.