Bais, Ille-et-Vilaine

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

{{Infobox French commune

|name = Bais

|native name = {{native name|mis|paren=no|Baès}} (Gallo)
{{native name|br|Baez}}

|commune status = Commune

|image = Bais (35) Église Saint-Marse Façade sud 61.jpg

|caption = Saint Mars church

|image coat of arms = Blason ville fr Bais (Ille-et-Vilaine).svg

|coordinates = {{coord|48.0114|-1.2892|format=dms|display=inline,title}}

|INSEE = 35014

|postal code = 35680

|arrondissement = Fougères-Vitré

|canton = La Guerche-de-Bretagne

|mayor = Nathalie Clouet{{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 = CA Vitré Communauté

|elevation min m = 47

|elevation max m = 109

|area km2 = 35.18

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

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

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

}}

Bais ({{IPA|fr|bɛ}}; {{langx|br|Baez}}; Gallo: Baès) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. The writer Anne de Tourville (1910–2004), winner of the 1951 Prix Femina, was born in Bais.