Mesnil-Martinsart
| Mesnil-Martinsart | |
|---|---|
| The church in Mesnil-Martinsart | |
| Location of Mesnil-Martinsart | |
| Coordinates: 50°03′16″N 2°38′57″E / 50.0544°N 2.6492°E | |
| Country | France | 
| Region | Hauts-de-France | 
| Department | Somme | 
| Arrondissement | Péronne | 
| Canton | Albert | 
| Intercommunality | Pays du Coquelicot | 
| Government | |
| • Mayor (2020–2026) | Roger Roussel | 
| Area 1 | 8.76 km2 (3.38 sq mi) | 
| Population  (2022) | 237 | 
| • Density | 27/km2 (70/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 80540 /80300 | 
| Elevation | 62–144 m (203–472 ft) (avg. 128 m or 420 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Mesnil-Martinsart (French pronunciation: [menil maʁtɛ̃saʁ]) is a commune in the Somme département in Hauts-de-France in northern France.