| Saint-Martin-d'Estréaux | |
| Commune Status: | Commune |
| Arrondissement: | Roanne |
| Canton: | Renaison |
| Insee: | 42257 |
| Postal Code: | 42620 |
| Mayor: | Christine Araneo[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Roannais Agglomération |
| Coordinates: | 46.2069°N 3.7992°W |
| Elevation M: | 470 |
| Elevation Min M: | 298 |
| Elevation Max M: | 589 |
| Area Km2: | 29.6 |
Saint-Martin-d'Estréaux (in French pronounced as /sɛ̃ maʁtɛ̃ dɛstʁeo/) is a commune in the Loire department in central France.[2]