Castres may refer to: Castres, a commune in the Tarn department in the Midi-Pyrénées region Castres, Aisne, a commune in the Aisne department in the Picardy region Castres-Gironde, a commune in the Gironde department in the Aquitaine region Arrondissement of Castres, an arrondissement in the Tarn department in the Midi-Pyrénées region