Guernes

{{Infobox French commune

|name = Guernes

|commune status = Commune

|image = Guernes - Mairie01.jpg

|caption = Town hall

|image coat of arms = Blason ville fr Guernes (Yvelines).svg

|arrondissement = Mantes-la-Jolie

|canton = Limay

|INSEE = 78290

|postal code = 78520

|mayor = Pascal Brusseaux{{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=4 May 2022|language=fr}}

|term = 2020–2026

|intercommunality = CU Grand Paris Seine et Oise

|coordinates = {{coord|49.0117|1.6367|format=dms|display=inline,title}}

|elevation m = 50

|elevation min m = 15

|elevation max m = 71

|area km2 = 8.54

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

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

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

}}

Guernes ({{IPA|fr|ɡɛʁn}}) is a commune in the Yvelines department in the Île-de-France region in north-central France.