Geographical names are proper names of geographical features. They are characterized by different meanings, contexts, and history. Local names of geographical features (endonyms) may differ from the foreign names (exonyms) for the same feature. If a specific geographical name has been codified or in any other way established by an authority of the area where this name is located, this name is a standardized geographical name. In order to establish solid common ground, geographical names have been coordinated at a global level by the United Nations Group of Experts on Geographical Names (UNGEGN) since 1959. It is assisted by twenty-four regional linguistic/geographical divisions. Among these is the East Central and South-East Europe Division, with seventeen member states. Currently, the division is chaired by Slovenia. Some of the participants in the last session prepared four research articles for this special thematic issue of Acta geographica Slovenica. All of them are also briefly presented in the end of this article.