By, Doubs

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

{{Infobox French commune

|name = By

|commune status = Commune

|image = By, mairie - img 46615.jpg

|caption = The town hall in By

|coordinates = {{coord|47.0139|5.89|format=dms|display=inline,title}}

|INSEE = 25104

|postal code = 25440

|arrondissement = Besançon

|canton = Saint-Vit

|mayor = Elisabeth Jacques{{cite web|title=Répertoire national des élus: les maires|url=https://www.data.gouv.fr/fr/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|website=data.gouv.fr, Plateforme ouverte des données publiques françaises|date=2 December 2020|language=fr}}

|term = 2020–2026

|intercommunality = Loue-Lison

|elevation min m = 458

|elevation max m = 638

|area km2 = 7.34

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

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

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

}}

By ({{IPA|fr|bi}}) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.