Abstract: This article is devoted to the research of the category of evidentiality in the Kadar language. The authors meticulously examine such aspects of this category as the problem of grammatical structuring of evidentiality forms, means of formation of these forms and meanings they express. The goals of this article include determining the existing verb forms with evidentiality, research of their key meanings and means of forming, as well as determining the present peculiarities on the basis of comparison of Kadar data with the evidential forms of literary language and other Dargin idioms. It is established that in the Kadar language there are three functioning grammemes of evidentiality category – experiential, inferential and presumptive, which are formed by attached of auxiliary verbs to the forms of gerund. This work provides their detailed characteristics. The results of this work can be used in research of evidentiality in other cognate languages.