The paper presents an analysis of the structural types of the adnominal possessive constructions in three little-studied Southern dialects of Selkup: Narym, Vasjugan and Middle-Ob. Apart from the other two types of possessive constructions (predicative and external) the adnominal possessive construction corresponds to a noun phrase involving a possessor (dependent) and a possessed (head). The possessor can be expressed by a noun or a pronoun, thus two types of adnominal possessive constructions (PNP) can be distinguished: nominal PNP and pronominal PNP. There are some approaches to marking possession in each type of the PNP in Selkup, which boil down to morphological or syntactic encoding. The locus of explicitly expressed markers encoding the possessive relation can either be on the head, on the dependent, on both or on neither of them in Southern Selkup.