The Dourdou de Conques (French pronunciation: [duʁdu də kɔ̃k], Dourdou of Conques) is an 83.7 km (52.0 mi) long river in the department of Aveyron, southern France. Its source is near the village of Lassouts. It flows generally west. It is a left tributary of the Lot, into which it flows near Grand-Vabre.

The following list is ordered from source to mouth:

• Aveyron: Lassouts, Palmas-d'Aveyron, Gabriac, Bozouls, Rodelle, Muret-le-Château, Villecomtal, Pruines, Mouret, Nauviale, Conques-en-Rouergue