Caussou
| Caussou | |
|---|---|
| The church in Caussou | |
| Location of Caussou | |
| Coordinates: 42°46′11″N 1°48′23″E / 42.7697°N 1.8064°E | |
| Country | France | 
| Region | Occitania | 
| Department | Ariège | 
| Arrondissement | Foix | 
| Canton | Haute-Ariège | 
| Government | |
| • Mayor (2020–2026) | Anne Laplume | 
| Area 1 | 15.83 km2 (6.11 sq mi) | 
| Population  (2022) | 47 | 
| • Density | 3.0/km2 (7.7/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 09087 /09250 | 
| Elevation | 760–1,920 m (2,490–6,300 ft) (avg. 840 m or 2,760 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Caussou (French pronunciation: [kosu]; Occitan: Causson) is a commune in the Ariège department in the Occitanie region in southwestern France.
Its church is dedicated to St Jean Baptist.