Type specimens of birds in the Natural History Museum, University of Oslo, Norway.

A list of all known bird type specimens in the collection of the Natural History Museum, University of Oslo, Norway is presented. The specimens originate from northern Australia, eastern Indonesia or Tristan da Cunha, and have either been collected and described by personnel associated with the museum or sent from other museums in exchange for other specimens. The catalogue is not intended as a taxonomic revision of the treated taxa, and consequently no taxonomic revisions are made, but the type status of some specimens formerly considered to be types is refuted. The collection holds name-bearing types of 11 taxa, comprising one holotype and 26 syntypes; two paratypes from the same type series as the holotype; and one paralectotype of a twelfth taxon. The catalogue also includes two specimens of one taxon here refuted as being type specimens.