Fagnon

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

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

{{Infobox French commune

|name = Fagnon

|commune status = Commune

|image = Fagnon (Ardennes) mairie.JPG

|caption = The town hall in Fagnon

|image coat of arms = Blason ville fr Fagnon (Ardennes).svg

|arrondissement = Charleville-Mézières

|canton = Charleville-Mézières-1

|INSEE = 08162

|postal code = 08090

|mayor = Coralie Durand{{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 = Ardenne Métropole

|coordinates = {{coord|49.7372|4.6364|format=dms|display=inline,title}}

|elevation m = 173

|elevation min m =

|elevation max m =

|area km2 = 9.98

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

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

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

}}

Fagnon ({{IPA|fr|faɲɔ̃}}) is a commune in the Ardennes department in the Grand Est region, northern France.