Carmaux (French pronunciation: [kaʁmo]; Occitan: Carmauç) is a commune in the Tarn department in southern France.

[3] The Compagnie minière de Carmaux has its origins in a coal mining concession granted in 1852 to Gabriel de Solages, which became the Compagnie minière de Carmaux.

He also founded a glass bottle factory, fueled by the coal.

The Cérou flows northwestward through the commune and crosses the town.

Carmaux station has rail connections to Toulouse, Albi and Rodez.