This paper documents and analyzes the possessive construction in the Northern Dene (Athabaskan) languages Denesųline and Tlichǫ. The construction occurs not only when one noun is related to another (whether the relation is one of literal possession or not) but also with subsets of relative clauses and compounds, and when a numeral precedes a unit noun. We give a syntactic account of the possessive construction which addresses its diverse uses while maintaining a single core function and configuration. At the heart of our analysis is the proposal that the hallmark of the construction, the “possessed noun suffix,” is an overt manifestation of the functional head n.