This work discusses Slovenian geographical names: endonyms in Slovenia and in border areas inhabited by Slovenians in neighboring countries, and Slovenian exonyms used in Slovenian to describe geographical features outside the Slovenian settlement area. First, it gives a historical overview of dealing with geographical names in Slovenia and especially emphasizes their scholarly and cartographic significance. Then it presents macrotoponyms and microtoponyms, especially geographical names in Slovenian normative guides, names of countries, and foreign exonyms for Slovenian endonyms. All of this is connected with the United Nations Group of Experts on Geographical Names (UNGEGN) and the Slovenian Government Commission for the Standardization of Geographical Names. The former body handles geographical names globally and the latter nationally.