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.

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.

Some tourists have started to renovate old cottages and set up permanent or holiday homes in the area.

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