This research aims to investigate how Heidegger's thoughts are received in Iran and how the Iranian interpretation of Heidegger has influenced contemporary Iranian thinking. The significance of Heidegger’s philosophy for Iranian thinkers can be due to the fact that Heidegger is the most radical critique of the Western civilization, modernity, and modern rationality. On the one hand, Heidegger’s thought can provide Iranians with the theoretical foundations based on which the Eastern traditions can be reinterpreted and reconstructed. On the other hand, (...) Heideggerian view of the history of philosophy can be used by Iranians as a mirror to see themselves and the whole tradition of Eastern thinking. I also try to provide a sketch of the thought of Ahmad Fardid as the first interpreter of Heidegger in Iran and his influence on some other Iranian thinkers. My main claim is that the religious-spiritual interpretation of Heidegger by Fardid is by no means a distortion of Heidegger’s thoughts but a necessary step towards the academically and scientifically true understanding of Heidegger as the greatest critique of the Western thinking. There are various historical, philological, and interpretive clues in Heidegger’s life and works that make the spiritual (but certainly not theological) interpretation of Heidegger possible. In my opinion, contrary to some claims by Iranian scholars and intellectuals, a secular Heidegger is by no means the true Heidegger, because the secular interpretation is in opposition to the main insight of Heideggerian thought that is overcoming nihilism and forgetfulness of being. (shrink)