Onet-le-Château

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

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

{{Expand French|topic=geo|date=December 2008|Onet-le-Château}}

{{Infobox French commune

|name = Onet-le-Château

|native name = {{native name|oc|Ònes}}

|commune status = Commune

|image = Castle of Onet-le-Chateau 20.jpg

|caption = Castle of Onet-le-Château

|arrondissement = Rodez

|canton = Rodez-Onet

|INSEE = 12176

|postal code = 12850

|mayor = Jean-Philippe Kéroslian{{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 = Rodez Agglomération

|coordinates = {{coord|44.3664|2.5942|format=dms|display=inline,title}}

|elevation m = 500

|elevation min m = 524

|elevation max m = 631

|area km2 = 40.2

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

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

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

}}

Onet-le-Château ({{IPA|fr|ɔnɛ l(ə) ʃɑto|lang}}; {{langx|oc|Ònes}}) is a commune in the Aveyron department in southern France.