Saint-Lizier
Commune
Saint-Lizier cloister
Coat of arms
Location of Saint-Lizier
Saint-Lizier Show map of France Saint-Lizier Show map of Occitanie
Coordinates: 43°00′10″N 1°08′15″E / 43.0028°N 1.1375°E / 43.0028; 1.1375
Country	France
Region	Occitania
Department	Ariège
Arrondissement	Saint-Girons
Canton	Portes du Couserans
Intercommunality	Couserans-Pyrénées
Government
• Mayor (2020–2026)	Michel Pichan[1]
Area 1	9.01 km2 (3.48 sq mi)
Population  (2021)[2]	1,377
• Density	150/km2 (400/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	09268 /09190
Elevation	368–578 m (1,207–1,896 ft) (avg. 484 m or 1,588 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Saint-Lizier (French pronunciation: [sɛ̃ lizje]; Occitan: Sent Líser) is a commune in the Ariège department in southwestern France, situated on the river Salat.

Saint-Lizier has a rich history stretching back to pre Gallo-Roman times. In 72 BC, Pompey, returning from his triumphs in Spain against Sertorius, stopped here. He gathered together the ancient tribes of the area under the name Consorani. The ramparts seen today date from 3rd century AD and enclose the oppidum.

During the fifth century, the citadel became an episcopal see, the oldest in the Ariège area. Its first bishop is thought to have been Saint Valier. The town is named in honor of its 6th Century bishop Lycerius, canonized as Saint Lizier, a bishop who participated in the Council of Agde in 506. The town has two former cathedrals: Saint-Lizier Cathedral (now the parish church) and Notre-Dame-de-la-Sède Cathedral.

Inhabitants of Saint-Lizier are called Licérois.

• The mathematician Alexander Grothendieck (1928–2014) died in Saint-Lizier

• Communes of the Ariège department