Effincourt

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

{{Infobox French commune

|name = Effincourt

|commune status = Commune

|arrondissement = Saint-Dizier

|canton = Poissons

|INSEE = 52184

|postal code = 52300

|mayor = Jean-François Varnier{{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 =

|coordinates = {{coord|48.4964|5.2692|format=dms|display=inline,title}}

|elevation m = 293

|elevation min m = 282

|elevation max m = 386

|area km2 = 12.31

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

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

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

}}

Effincourt ({{IPA|fr|efɛ̃kuʁ}}) is a commune in the Haute-Marne department in north-eastern France.