| Official Name: | Fossnes |
| Other Name: | Valberg |
| Settlement Type: | Village |
| Pushpin Map: | Norway Vestfold#Norway |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location of the village |
| Subdivision Type: | Country |
| Subdivision Name: | Norway |
| Subdivision Name1: | Eastern Norway |
| Subdivision Name2: | Vestfold |
| Subdivision Type3: | District |
| Subdivision Name3: | Vestfold |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Sandefjord Municipality |
| Utc Offset1: | +01:00 |
| Utc Offset1 Dst: | +02:00 |
| Area Total Km2: | 0.36 |
| Population As Of: | 2022 |
| Population Total: | 650 |
| Population Density Km2: | 1793 |
| Postal Code Type: | Post Code |
| Postal Code: | 3160 Stokke |
| Coordinates: | 59.2802°N 10.2587°W |
| Elevation M: | 54 |
| Elevation Footnotes: | [1] |
Fossnes or Valberg is a village in Sandefjord Municipality in Vestfold county, Norway. The village is located about to the north of the village of Stokke and about to the southeast of the village of Andebu. The city of Tønsberg lies about to the east.
The 0.36km2 village has a population (2022) of 650 and a population density of .[2]
Arnadal Church is located on the north side of the village, along the river Merkadamselva.