| Fontclaireau | |
| Arrondissement: | Confolens |
| Canton: | Boixe-et-Manslois |
| Insee: | 16140 |
| Postal Code: | 16230 |
| Coordinates: | 45.8956°N 0.2033°W |
| Elevation M: | 124 |
| Elevation Min M: | 56 |
| Elevation Max M: | 124 |
| Area Km2: | 5.61 |
| Population: | 436 |
| Population Date: | 2020 |
| Population Footnotes: | [1] |
| Commune: | Mansle-les-Fontaines |
Fontclaireau (pronounced as /fr/) is a former commune in the Charente department in southwestern France. On 1 January 2023, it was merged into the new commune of Mansle-les-Fontaines.[2]