| Vatnsoyrar | |
| Settlement Type: | Village |
| Pushpin Map: | Faroe Islands |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 250 |
| Pushpin Map Caption: | Location in the Faroe Islands |
| Subdivision Type: | State |
| Subdivision Type1: | Constituent country |
| Subdivision Name1: |  Faroe Islands |
| Subdivision Type2: | Island |
| Subdivision Name2: | Vágar |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Vágar Municipality |
| Established Title: | Founded |
| Established Date: | 1921 |
| Unit Pref: | Imperial |
| Population As Of: | January 1, 2020 |
| Population Total: | 44 |
| Timezone Dst: | EST |
| Utc Offset Dst: | +1 |
| Coordinates: | 62.0742°N -7.2481°W |
| Postal Code Type: | Postal code |
| Postal Code: | FO 385 |
| Blank Name: | Climate |
| Blank Info: | Cfc |
Vatnsoyrar (da|Vandsøre) is a village founded in 1921 in the middle of the Faroese island of Vagar. Vatnsoyrar, being created in 1921, is one of the youngest settlements in the Faroes. It is the only village in the archipelago that is not on the coast, but instead it is next to Sørvagsvatn, the largest lake on the Faroe Islands. Sørvagsvatn was used by the British Army as a natural airfield for seaplanes during the British occupation of the Faroes in the Second World War, while Vagar's airport was built immediately to the west of the lake.
There is a small motor museum (Vatnsoyra Bilasavn) in Vatnsoyrar with, among other things, a 1915 Model T Ford and a 1922 Ford Model TT truck, the first types of car to be used on the Faroe Islands. Beyond that there is a factory for doors and windows (Vatnsoyra Snikkaravirki).
There is a popular camp school for young people in Vatnsoyrar.