The article singles out one dimension of the history of concepts in general and of Koselleck’s work in particular, the “theory of historical times,” which at present is both contested and simply overlooked. After discussing some of the arguments for and against the necessity of such a theory for the practice of conceptual history, the article moves on to suggest an alternative context for grasping its originality, the so-called linguistic turn, manifest in French structuralist thought and especially in the works of Michel Foucault. In Koselleck’s works key structuralist ideas like structure and the diachronicsynchronic opposition are developed in ways that open them to questions of historicity and multiple times.