| Passonfontaine | |
| Commune Status: | Commune |
| Coordinates: | 47.1086°N 6.4194°W |
| Insee: | 25447 |
| Postal Code: | 25690 |
| Arrondissement: | Pontarlier |
| Canton: | Valdahon |
| Mayor: | Benoit Bouchard[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 715 |
| Elevation Max M: | 960 |
| Area Km2: | 19.49 |
Passonfontaine (in French pronounced as /pasɔ̃fɔ̃tɛn/) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.