Canton of Saint-Paul-Trois-Châteaux

Solérieux (French pronunciation: [sɔleʁjø]; Occitan: Solerieu) is a commune in the Drôme department in southeastern France.

La Baume-de-Transit (French pronunciation: [la bom də tʁɑ̃zit]; Occitan: Bauma de Transit) is a commune in the Drôme department in southeastern France.

Suze-la-Rousse (French pronunciation: [syz la ʁus]; Occitan: Susa la Rossa) is a commune in the Drôme department in southeastern France, situated in the heart of the Rhône Valley vineyards

Bouchet (French pronunciation: [buˈʃɛ]; Occitan: Boschet) is a commune in the Drôme department in southeastern France.

Montségur-sur-Lauzon (French pronunciation: [mɔ̃seɡyʁ syʁ lozɔ̃]; Occitan: Montsegur) is a commune in the Drôme department in southeastern France.

Saint-Restitut (French pronunciation: [sɛ̃ ʁɛstity]; Occitan: Sant Restit) is a commune in the Drôme department in southeastern France.

Clansayes (French pronunciation: [klɑ̃saj]; Occitan: Clansaias) is a commune in the Drôme department in southeastern France.

Rochegude (French pronunciation: [ʁɔʃɡyd]; Occitan: Ròchaguda) is a commune in the Drôme department in southeastern France.

The former French Roman Catholic Diocese of Saint-Paul-Trois-Châteaux (Latin: Dioecesis Sancti Pauli Tricastinorum; French: Diocèse de Saint-Paul-Trois-Châteaux), sometimes, just like the town, also known as the Diocese of Saint-Paul-en-Tricastin (Latin: Dioecesis Sancti Pauli Tricastinorum; French: Diocèse de Saint-Paul-en-Tricastin), existed from the sixth century to the French Revolution. Its see was at Saint-Paul-Trois-Châteaux, in the modern department of Drôme, southern France. Its territory was included in the expanded Diocese of Valence, by the Napoleonic Concordat of 1801.

Saint-Paul-Trois-Châteaux (French pronunciation: [sɛ̃ pɔl tʁwɑ ʃɑto]; Vivaro-Alpine: Sant Pau de Tricastin), sometimes known as St-Paul-en-Tricastin, is a commune, an administrative region, in the Drôme department in southeastern France.

Saint-Paul-Trois-Châteaux Cathedral (French: Cathédrale Notre-Dame-et-Saint-Paul de Saint-Paul-Trois-Châteaux or Cathédrale Notre-Dame de Saint-Paul-Trois-Châteaux) is a former Roman Catholic church located in the town of Saint-Paul-Trois-Châteaux, France. It was a national monument. It was formerly the seat of the Bishop of Saint-Paul-Trois-Châteaux. The diocese (sometimes, like the town, also known as Saint-Paul-en-Tricastin) was created in either the 4th or the 6th century and was abolished under the Concordat of 1801, when its territory was divided between the Diocese of Avignon and the Diocese of Valence, known since 1911 as the Diocese of Valence (–Die–Saint-Paul-Trois-Châteaux).

Chantemerle-lès-Grignan is a commune in the Drôme department in southeastern France.