La Tranche-sur-Mer

{{For|homonymy|Trenche (disambiguation){{!}}Trenche}}

{{Infobox French commune

|name = La Tranche-sur-Mer

|commune status = Commune

|image = Plage centrale de la Tranche-sur-Mer 2.jpg

|caption = The beach at La Tranche-sur-Mer

|image coat of arms = Blason ville fr La Tranche-sur-Mer (Vendée).svg

|arrondissement = Les Sables-d'Olonne

|canton = Mareuil-sur-Lay-Dissais

|INSEE = 85294

|postal code = 85360

|mayor = Serge Kubryk{{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

|coordinates = {{coord|46.344|-1.4383|format=dms|display=inline,title}}

|elevation min m = 0

|elevation max m = 25

|area km2 = 17.63

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

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

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

}}

La Tranche-sur-Mer ({{IPA|fr|la tʁɑ̃ʃ syʁ mɛʁ}}, literally La Tranche on Sea) is a commune in the Vendée department in the Pays de la Loire region in western France.

The final stages of the action of 30 June 1798, during which all three combatant frigates grounded, was fought just off the harbour.