In this paper I investigate to what extent the core structures of Turkic might be inherited from those of proto-Transeurasian. The label “Transeurasian” is used for the grouping that includes the Japonic, Koreanic, Tungusic, Mongolic, and Turkic languages. The term “core structures” refers to a concentration of proto-typical linguistic features that delimit a group of languages vis-à-vis their neighbors. After evaluating 20 core structures of the Transeurasian languages, I argue how the languages may have come to share these features, considering as possible explanations areal diffusion, universal tendencies, genealogical relationships or an interaction of these factors.