Cierzac

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

{{Expand French|topic=geo|date=December 2008|Cierzac}}

{{Infobox French commune

|name = Cierzac

|commune status = Commune

|image = Cierzac, mairie.jpg

|caption = The town hall in Cierzac

|arrondissement = Jonzac

|canton = Jonzac

|INSEE = 17106

|postal code = 17520

|mayor = Laurent Bigey{{cite web|title=Répertoire national des élus: les maires|url=https://www.data.gouv.fr/en/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|website=data.gouv.fr, Plateforme ouverte des données publiques françaises|date=9 August 2021|language=fr}}

|term = 2020–2026

|intercommunality =

|coordinates = {{coord|45.57|-0.3114|format=dms|display=inline,title}}

|elevation m = 27

|elevation min m = 18

|elevation max m = 49

|area km2 = 5.2

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

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

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

}}

Cierzac ({{IPA|fr|sjɛʁzak}}) is a commune in the Charente-Maritime department in the Nouvelle-Aquitaine region in southwestern France.