Lachapelle-Graillouse

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

{{Expand French|topic=geo|date=December 2008|Lachapelle-Graillouse}}

{{Infobox French commune

|name = Lachapelle-Graillouse

|commune status = Commune

|arrondissement = Largentière

|canton = Haute-Ardèche

|INSEE = 07121

|postal code = 07470

|mayor = Roland Jallat{{cite web|title=Répertoire national des élus: les maires|url=https://www.data.gouv.fr/en/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|website=data.gouv.fr, Plateforme ouverte des données publiques françaises|date=9 August 2021|language=fr}}

|term = 2020–2026

|intercommunality =

|coordinates = {{coord|44.8133|4.0208|format=dms|display=inline,title}}

|elevation m = 1120

|elevation min m = 868

|elevation max m = 1233

|area km2 = 20.48

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

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

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

}}

Lachapelle-Graillouse ({{IPA|fr|laʃapɛl ɡʁajuz}}; {{langx|oc|La Chapèla Gralhosa}}) is a commune in the Ardèche department in southern France.