Аннотация:The article provides an overview of anaphoric and subject referential expressions across all Slavic languages. It is divided into three major sections. The first section discusses different interpretations of the term “referential system” and a number of related terms, such as pro-dropproperties, null subjects and zero expressions. The second section outlines several typological features which affect the distribution of anaphoric devices in different Slavic languages. The last section compares the languages under discussion in terms of their subject reference and provides some diachronic data on the non-trivial pro-drop loss in East Slavic.