| Official Name: | Kilsund |
| 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 |
| Area Total Km2: | 0.93 |
| Population As Of: | 2016 |
| Population Total: | 717 |
| Population Density Km2: | 771 |
| Postal Code Type: | Post Code |
| Postal Code: | 4920 Staubø |
| Coordinates: | 58.5532°N 8.9769°W |
| Elevation M: | 26 |
| Elevation Footnotes: | [1] |
Kilsund is a village in Arendal municipality in Agder county, Norway. The village is located on the island of Tverrdalsøya, although the village has grown over the bridge onto the nearby island of Flostaøya a short distance to the south. The village lies about northeast of the village of Strengereid, about northeast of the village of Eydehavn, about northeast of the town of Arendal, and about south of the town of Tvedestrand. Kilsund has two small villages located just to the north and east: Staubø and Holmsund.[2]
The 0.93km2 village has a population (2016) of 717 which gives the village a population density of .[3]