Plancher-Bas

{{Infobox French commune

|name = Plancher-Bas

|commune status = Commune

|image = Mairie de Plancher-Bas.jpg

|caption = The town hall in Plancher-Bas

|image coat of arms = Blason Plancher-Bas.svg

|coordinates = {{coord|47.7219|6.7336|format=dms|display=inline,title}}

|INSEE = 70413

|postal code = 70290

|arrondissement = Lure

|canton = Héricourt-1

|mayor = Eric Boilletot{{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=12 March 2025|language=fr}}

|term = 2024–2026

|elevation min m = 366

|elevation max m = 850

|area km2 = 29.12

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

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

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

|intercommunality=Rahin et Chérimont}}

Plancher-Bas is a commune in the Haute-Saône department in the region of Bourgogne-Franche-Comté in eastern France.