“Agencification” is a term proposed to define the process of creating government agencies, which started  in the early 1990s. According to the author, this term should be incorporated into the nomenclature of Polish administrative law, mainly due to the fact that administrative law scholars from other countries have been using it in the same sense as in this article for more than ten years. Therefore, the paper briefly discusses the models of agencies functioning in the legal systems of some European countries where they play an important role.