The article deals with theoretical foundations, functional characteristics, and place of urbanonyms in the onomastic system. Urbanonyms, as proper names of intracity objects - streets, avenues, squares, neighborhoods, and other objects - are not merely nominative units, they are also a system of signs that have social, cultural and ideological content. The study shows that urbanonyms, as a main component of urban vocabulary, play a significant role in forming the city's figurative and geographical image. They are widely studied by various scientists. The reason for this is the noticeable increase in interest in the city, which has been perceived as a social, cultural and mental phenomenon in recent decades. The purpose of the study is to examine the position of the term “urbanonym” within the onomastic system and to assess its usage in the scholarly literature. For this purpose, existing theoretical approaches are analyzed, the functional features of urbanonyms are systematized, and their differences from other onomastic units are substantiated. In the article, foreign and domestic studies devoted to the concept of urbanonyms are systematized, and existing approaches in this area are compared. It concludes that urbanonyms are not only a subcategory of toponyms but also an interdisciplinary phenomenon uniting various onomastic fields. This study suggests that such a conceptualization expands the prospects for the development of urbanonymy as a research field.