Longeau-Percey

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

{{Infobox French commune

|name = Longeau-Percey

|commune status = Commune

|image = Longeau FR (march 2008).jpg

|caption = The church and surroundings in Longeau

|image coat of arms = Blason Longeau-Percey.svg

|arrondissement = Langres

|canton = Villegusien-le-Lac

|INSEE = 52292

|postal code = 52250

|mayor = Isabelle Miot{{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 = Auberive Vingeanne et Montsaugeonnais

|coordinates = {{coord|47.7681|5.3114|format=dms|display=inline,title}}

|elevation m = 320

|elevation min m = 299

|elevation max m = 403

|area km2 = 7.48

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

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

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

}}

Longeau-Percey ({{IPA|fr|lɔ̃ʒo pɛʁsɛ}}) is a commune in the Haute-Marne department in north-eastern France. It was created in 1972 by the merger of two former communes: Percey-le-Pautel and Longeau, initially under the name Le Vallinot.[https://www.legifrance.gouv.fr/jorf/jo/id/JORFCONT000000020875 Modifications aux circonscriptions administratives territoriales (fusion de communes)], Journal officiel de la République française n° 0177, 30 July 1972, pp. 8183-8184.