Bonnac (French pronunciation: [bɔnak]; Occitan: Bonac) is a commune in the Ariège department of southwestern France.

It lies between the altitudes of 237 and 413 m. The village currently lies at the bottom of a hill but was previously located on the hill as evidence by remains of foundations.

The most notable building is the Eglise Saint-Pierre which dates to the 12th century and houses a baptismal font dating back to the early Romanesque era.

Bonnac is home to a number of companies, including Laines Paysannes, whose aim is to promote wool as a natural and sustainable resource.

Laines Paysannes is committed to supporting a traceable, local wool industry.