| Petit-Croix | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Petit-Croix.svg |
| Coordinates: | 47.6142°N 6.9736°W |
| Insee: | 90077 |
| Postal Code: | 90130 |
| Arrondissement: | Belfort |
| Canton: | Grandvillars |
| Mayor: | Isabelle Segura[1] |
| Term: | 2024 - 2026 |
| Intercommunality: | Grand Belfort |
| Elevation Min M: | 336 |
| Elevation Max M: | 376 |
| Area Km2: | 3.79 |
Petit-Croix (in French pronounced as /pəti kʁwa/, literally Little Cross) is a commune in the Territoire de Belfort department in Bourgogne-Franche-Comté in northeastern France.