Semussac

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

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

{{Infobox French commune

|name = Semussac

|commune status = Commune

|image = Semussac mairie.JPG

|caption = The town hall in Semussac

|image coat of arms = Blason ville fr Semussac 17.svg

|arrondissement = Saintes

|canton = Saujon

|INSEE = 17425

|postal code = 17120

|mayor = Michèle Carré{{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

|intercommunality = CA Royan Atlantique

|coordinates = {{coord|45.6|-0.9125|format=dms|display=inline,title}}

|elevation min m = 0

|elevation max m = 42

|area km2 = 24.85

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

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

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

}}

Semussac ({{IPA|fr|semysak}}) is a commune in the Charente-Maritime department in southwestern France.