Les Ollières-sur-Eyrieux (French pronunciation: [le.z‿ɔljɛʁ syʁ eʁjø], literally Les Ollières on Eyrieux; Occitan: Las Olièras) is a commune in the Ardèche department in southern France.

The nearest towns are Privas and Saint-Sauveur-de-Montagut.

The first records of a settlement can be dated back to the 12th century. Situated on the banks of the river Eyrieux (a tributary to the Rhône), Les Ollières (as it is often shortened to by the local people) became a central location for the treatment and processing of silk in the early 18th century. The silk (and later different textiles) industry was to feature heavily in the surrounding area.

The village has now become a tourist location, attracting many Dutch, German, Swiss and English tourists to its many camp sites during the summer months. Some tourists have started to renovate old cottages and set up permanent or holiday homes in the area.

Historical population

Year	Pop.	±% p.a.
1968	960	—
1975	788	−2.78%
1982	793	+0.09%
1990	769	−0.38%
1999	797	+0.40%
2009	927	+1.52%
2014	957	+0.64%
2020	1,011	+0.92%
Source: INSEE

For the people of Les Ollières a daily bus service runs to Valence and Privas.

• Communes of the Ardèche department