| Saint-Just-Ibarre | |
| Native Name: | Donaixti-Ibarre |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Just-Ibarre (Pyrénées-Atlantiques).svg |
| Arrondissement: | Bayonne |
| Canton: | Pays de Bidache, Amikuze et Ostibarre |
| Insee: | 64487 |
| Postal Code: | 64120 |
| Mayor: | André Larralde[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Pays Basque |
| Coordinates: | 43.1953°N -1.0553°W |
| Elevation M: | 435 |
| Elevation Min M: | 172 |
| Elevation Max M: | 1179 |
| Area Km2: | 30.03 |
Saint-Just-Ibarre (in French pronounced as /sɛ̃ ʒy(st) ibaʁ/; Basque: Donaixti-Ibarre)[2] is a commune in the Pyrénées-Atlantiques department in south-western France.
It is located in the former province of Lower Navarre.[2]