In this paper, the author deals with the problem of contingency not merely in the context of modal logic, but rather by showing that a certain understanding of contingency determines Heidegger’s transcendentalism as well as his thought after the “Kehre.” For this purpose he lays on Sein und Zeit and roughly on Was heißt Denken? It appears that the question of contingency comes across in the deep speculative ground of Heidegger’s different philosophical projects.