| Champlost | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Champlost (Yonne).svg |
| Coordinates: | 48.0278°N 3.6686°W |
| Insee: | 89076 |
| Postal Code: | 89210 |
| Arrondissement: | Auxerre |
| Canton: | Brienon-sur-Armançon |
| Mayor: | Jean-Louis Quéret[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 101 |
| Elevation Max M: | 293 |
| Area Km2: | 22.94 |
Champlost (in French pronounced as /ʃɑ̃plo/) is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.