| Onans | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Onans (Doubs).svg |
| Coordinates: | 47.5031°N 6.6106°W |
| Insee: | 25431 |
| Postal Code: | 25250 |
| Arrondissement: | Montbéliard |
| Canton: | Bavans |
| Mayor: | Claude Hueber[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 335 |
| Elevation Max M: | 481 |
| Area Km2: | 14.21 |
Onans (in French pronounced as /ɔnɑ̃/) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.