| Saint-Paul-sur-Ubaye | |
| Commune Status: | Commune |
| Arrondissement: | Barcelonnette |
| Canton: | Barcelonnette |
| Insee: | 04193 |
| Postal Code: | 04530 |
| Mayor: | Bernard Isoard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Vallée de l'Ubaye - Serre-Ponçon |
| Coordinates: | 44.5158°N 6.7522°W |
| Area Km2: | 205.55 |
Saint-Paul-sur-Ubaye (pronounced as /fr/, "Saint Paul-on-Ubaye"; Vivaro-Alpine: Sant Pau d'Ubaia, before 1998: Saint-Paul)[2] is an alpine commune on the Italian border in the Alpes-de-Haute-Provence department in the Provence-Alpes-Côte d'Azur region in Southeastern France.
With an area of, the commune of Saint-Paul-sur-Ubaye is the largest commune in the Alpes-de-Haute-Provence department by surface area. It is located in the department's northeastern part, on the departmental border with Hautes-Alpes. The source of the Ubaye is in the commune.
St. Paul sur-Ubaye has a subarctic climate (Dfc)