On the basis of original field data, we show that stative predicates in the Tlingit language (Na-Dene family) are morphosyntactically distinguished between so-called ‘K-states’ and ‘D-states’ (Maienborn 2005). While this proposed distinction between stative predicates – previously based solely on German and English data – remains highly controversial (Dölling 2005, Higginbotham 2005, Ramchand 2005, Rothstein 2005), we show that the behavior of stative marking in Tlingit provides independent cross-linguistic evidence for its grammatical reality. In addition, the nature of the Tlingit stative marker challenges certain syntactic and semantic assumptions regarding the nature of states, especially their structural and conceptual primacy and simplicity. Finally, we develop a preliminary syntactic and semantic analysis of Tlingit K-states and D-states, building upon both the prior semantic work of Maienborn (2005) and the morpho-syntactic theory of Tlingit verbs developed and defended by Crippen (2019).