| Arbre | |
| Flag Size: | 120x100px |
| Pushpin Map: | Belgium#Europe |
| Pushpin Label: | Arbre |
| Coordinates: | 50.6°N 3.8°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Belgium |
| Subdivision Type1: | Region |
| Subdivision Type2: | Province |
| Subdivision Name2: | Hainaut |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Ath |
| Population Density Km2: | auto |
| Area Code Type: | Area codes |
Arbre is a village and district of the municipality of Ath, located in the Hainaut Province in Wallonia, Belgium.
During the Middle Ages the village was a fief; the knight Methieu d'Arbre and his son Hugues distinguished themselves during the Crusades. A castle once existed in the village but only a few traces remains today. The village church was built in 1835, but the tower stems from an earlier building from the 16th century.[1]