Monthois

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

{{Expand French|topic=geo|date=December 2008|Monthois}}

{{Infobox French commune

|name = Monthois

|commune status = Commune

|image = Monthois - la Mairie - Photo Francis Neuvens lesardennesvuesdusol.fotoloft.fr.JPG

|caption = Town hall

|image coat of arms = Blason ville fr Monthois 08.svg

|arrondissement = Vouziers

|canton = Attigny

|INSEE = 08303

|postal code = 08400

|mayor = Vincent Fleury{{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 = Argonne Ardennaise

|coordinates = {{coord|49.3128|4.7094|format=dms|display=inline,title}}

|elevation m = 109

|elevation min m =

|elevation max m =

|area km2 = 11.98

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

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

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

}}

Monthois ({{IPA|fr|mɔ̃twa}}) is a commune in the Ardennes department in northern France.