The article deals with a Slavic pronoun in synchrony and diachrony. The author analizes the peculiarities of a Slavic pronoun in the different Slavic languages: suppletive forms of personal pronouns, forms of personal pronouns with enclitic, the personal pronouns of the third person, the postfixes forming the voices, the functi­oning of demonstrative pronouns as articles. The meanings of the universal and indi­vidual in the sphere of pronouns in the different Slavic languages.