[4] The commune is located on the south shore of Arcachon Bay (Bassin d'Arcachon) and on the Atlantic coast of France, lying in the southwestern part of Gironde, on the departmental border with Landes.

La Teste-de-Buch is located in the department of Gironde, in the middle of the Landes forest, and south of Arcachon Bay.

The seaside resort of Pyla-sur-Mer, the village of Cazaux, the bird refuge and sandbank of Arguin are also part of the town.

[10] Today, the primary economic activities of the municipality include tourism, predominantly, along with oyster farming and shipbuilding.

Several businesses headquartered in La Teste-de-Buch include, for example, the engine manufacturer Nanni Diesel, the ice cream parlor Ô Sorbet d'amour, and the coffee retailer MaxiCoffee.