The Vikosen Nature Reserve (Norwegian: Vikosen naturreservat) is located in Sortland Municipality in Nordland county, Norway.

[1] The nature reserve includes a shallow water area in the inlet Vikosen and a 10-meter (33 ft) wide zone of shoreline above it.

[2][3] The area is protected in order to safeguard an important wetland area with natural flora and fauna, especially for its function as a nationally significant area used by the pink-footed goose during migration.

It offers the geese a much-needed gathering and resting point during their strenuous spring migration.

[1] County Road 956 passes through the village of Vik along the northwest shore of the reserve, and County Road 820 to Sortland runs along the southwest shore.