| Mandailles-Saint-Julien | |
| Commune Status: | Commune |
| Arrondissement: | Aurillac |
| Canton: | Vic-sur-Cère |
| Insee: | 15113 |
| Postal Code: | 15590 |
| Mayor: | Philippe Fabre[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Bassin d'Aurillac |
| Coordinates: | 45.0692°N 2.6569°W |
| Elevation M: | 940 |
| Elevation Min M: | 837 |
| Elevation Max M: | 1780 |
| Area Km2: | 35.37 |
Mandailles-Saint-Julien (in French pronounced as /mɑ̃daj sɛ̃ ʒyljɛ̃/; Occitan (post 1500);: Mandalha e Sant Julian) is a commune in the Cantal department in south-central France.