Vigelsø is a small, uninhabited island in Odense Fjord, off the coast of Funen, Denmark. With an area of 132 hectares, it is the largest island in the fjord and an important breeding ground for waterfowl and rest stop for migratory birds. It is part of the Special Area of Conservation No. SPC 94, Odense Fjord under the EU Habitat and Birds Directives.