| Official Name: | Fosnavåg |
| Settlement Type: | Town |
| Pushpin Map: | Møre og Romsdal#Norway |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location of the town |
| Subdivision Type: | Country |
| Subdivision Name: | Norway |
| Subdivision Name1: | Western Norway |
| Subdivision Name2: | Møre og Romsdal |
| Subdivision Type3: | District |
| Subdivision Name3: | Sunnmøre |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Herøy Municipality |
| Utc Offset1: | +01:00 |
| Utc Offset1 Dst: | +02:00 |
| Established Title: | Established as |
| Established Date: | |
| Established Title1: | Norwegian: By (Town) |
| Established Date1: | 2000 |
| Area Total Km2: | 3.11 |
| Population As Of: | 2018 |
| Population Total: | 3621 |
| Population Density Km2: | 1164 |
| Postal Code Type: | Post Code |
| Postal Code: | 6090 Fosnavåg |
| Coordinates: | 62.3419°N 5.634°W |
| Elevation M: | 4 |
| Elevation Footnotes: | [1] |
is a town in the municipality of Herøy in Møre og Romsdal county, Norway. It is the administrative center of the municipality of Herøy. The town is located on the island of Bergsøya, and it includes the Eggesbønes area on the south side of the island.
Fosnavåg is connected to the nearby village of Kvalsund on the island of Nerlandsøya via the Nerlandsøy Bridge to the west. Fosnavåg is connected to the east by a small bridge to the island of Leinøya, which in turn is connected to the islands of Remøya and Runde via the Remøy Bridge and Runde Bridge. The village of Eggesbønes lies south of the town along the shore of the Herøyfjord, just north of the Flåvær islands and the Flåvær Lighthouse. The large island of Gurskøya lies south of Fosnavåg.
On 7 June 2002, the municipal council voted to give Fosnavåg "town status". This means that ships harbored in Fosnavåg can be registered here instead of in other nearest towns like Ålesund and Ulsteinvik. The 3.11km2 town has a population (2018) of 3,621 and a population density of .[2]
Previously functioning mainly as an important fishing port, Fosnavåg has now become a major home for various maritime companies ranging from fishing to shipping, including ship building. Havila Shipping and Rem Offshore are two of the large companies based here. The municipality's secondary school and the main Herøy Church are both also located here. The newspaper Vestlandsnytt is based in Fosnavåg.[3]