This article is a descriptive study of interrogative structures in Tuvan, one of the Southern Siberian Turkic languages. The interrogative structures were examined in terms of both their morphosyntactic and syntactic structures and their semantic and discourse functions within the scope of this study. Firstly, Tuvan interrogative sentences were classified on a typological basis and described in detail. Also, the place of the interrogative particle in the sentence, grammatical functions of interrogative words and their discourse-pragmatic values were mentioned. The descriptions here can be applied not only to Standard Tuvan but also to certain of its dialects (Altay Tuvan and Jungar Tuvan). This article aims to provide a basis for interrogative typology in Turkic languages.