| Official Name: | Vatnebu |
| Settlement Type: | Village |
| Pushpin Map: | Agder#Norway |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location of the village |
| Subdivision Type: | Country |
| Subdivision Name: | Norway |
| Subdivision Name1: | Southern Norway |
| Subdivision Name2: | Agder |
| Subdivision Type3: | District |
| Subdivision Name3: | Østre Agder |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Arendal |
| Utc Offset1: | +01:00 |
| Utc Offset1 Dst: | +02:00 |
| Postal Code Type: | Post Code |
| Postal Code: | 4900 Tvedestrand |
| Coordinates: | 58.5533°N 8.9404°W |
| Elevation M: | 17 |
| Elevation Footnotes: | [1] |
Vatnebu is a village in Arendal municipality in Agder county, Norway. The village is located on the mainland near the Skaggerak coast, about southwest of the village of Kilsund on the nearby island of Tverrdalsøya and about northeast of the village of Eydehavn.