| Courniou | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Courniou (Hérault).svg |
| Arrondissement: | Béziers |
| Canton: | Saint-Pons-de-Thomières |
| Insee: | 34086 |
| Postal Code: | 34220 |
| Mayor: | Catherine Sonzogni[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.4744°N 2.7125°W |
| Elevation M: | 362 |
| Elevation Min M: | 329 |
| Elevation Max M: | 951 |
| Area Km2: | 30.06 |
Courniou (in French pronounced as /kuʁnju/; Occitan (post 1500);: Cornhon) is a commune in the Hérault department in southern France.
Courniou has a warm-summer mediterranean climate (Köppen climate classification Csb). The average annual temperature in Courniou is . The average annual rainfall is with December as the wettest month. The temperatures are highest on average in July, at around, and lowest in January, at around . The highest temperature ever recorded in Courniou was on 12 August 2003; the coldest temperature ever recorded was on 16 January 1985.