| Rennes-sur-Loue | |
| Commune Status: | Commune |
| Coordinates: | 47.0128°N 5.8536°W |
| Insee: | 25488 |
| Postal Code: | 25440 |
| Arrondissement: | Besançon |
| Canton: | Saint-Vit |
| Mayor: | Thierry Maire-du-Poset[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Loue-Lison |
| Elevation Min M: | 245 |
| Elevation Max M: | 495 |
| Area Km2: | 5.5 |
Rennes-sur-Loue (in French pronounced as /ʁɛn syʁ lu/, literally Rennes on Loue) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.