Andernos-les-Bains (French pronunciation: [ɑ̃dɛʁnɔs le bɛ̃] ⓘ; Occitan: Endarnòs) is a commune in the Gironde department, southwestern France.

Andernos-les-Bains consists of four other small communities: Taussat, Cassy, Lanton and Audenge.

For many years, the oyster and fishing industry provided the main income to the area.

An oil tanker spill in 1978 further damaged the oyster industry, which continued to suffer around the bay until 1981.

Since 2000, the oyster industry has been recovering and now nearly 15,000 metric tons are produced per year.