Ustaritz

 ( Communes Of Pyrénées-atlantiques ) 

Ustaritz (; ) is a town in the traditional Basque province of Labourd, now a commune in the Pyrénées-Atlantiques department, southwestern France. It is located on the river Nive some inland from Bayonne. Ustaritz station has rail connections to Saint-Jean-Pied-de-Port, Cambo-les-Bains and Bayonne.

Ustaritz was the location of the assembly of local Basque leaders before the French Revolution. The 19th-century French playwright and historian Jean-Joseph Ader (1796–1859) was born in Ustaritz.

• Communes of the Pyrénées-Atlantiques department

• UZTARITZE in the Bernardo Estornés Lasa - Auñamendi Encyclopedia (Euskomedia Fundazioa) Information available in Spanish language