Longavesnes
| Longavesnes | |
|---|---|
| The town hall in Longavesnes | |
| Location of Longavesnes | |
| Coordinates: 49°58′18″N 3°03′37″E / 49.9717°N 3.0603°E | |
| Country | France | 
| Region | Hauts-de-France | 
| Department | Somme | 
| Arrondissement | Péronne | 
| Canton | Péronne | 
| Intercommunality | Haute Somme | 
| Government | |
| • Mayor (2020–2026) | Xavier Wauters | 
| Area 1 | 4.09 km2 (1.58 sq mi) | 
| Population  (2022) | 72 | 
| • Density | 18/km2 (46/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 80487 /80240 | 
| Elevation | 94–144 m (308–472 ft) (avg. 100 m or 330 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Longavesnes (French pronunciation: [lɔ̃ɡavɛn]) is a commune in the Somme department in Hauts-de-France in northern France.