Grandchamp, Yvelines

{{Infobox French commune

|name = Grandchamp

|commune status = Commune

|image = Grandchamp Mairie1.jpg

|caption = Town hall

|image coat of arms = Blason ville fr Grandchamp 78.svg

|arrondissement = Mantes-la-Jolie

|canton = Bonnières-sur-Seine

|INSEE = 78283

|postal code = 78113

|mayor = Hervé Renauld{{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 = Pays Houdanais

|coordinates = {{coord|48.7083|1.6019|format=dms|display=inline,title}}

|elevation m = 107

|elevation min m = 123

|elevation max m = 183

|area km2 = 6.05

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

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

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

}}

Grandchamp ({{IPA|fr|ɡʁɑ̃ʃɑ̃|-|LL-Q150 (fra)-XANA000-Grandchamp.wav}}) is a commune in the Yvelines department in the Île-de-France region in north-central France.