The purpose of this article is to verify the place of Heim`s theology in the realm of the dialogue between theology and science. That sounds strange to someone who is engaged in the dialogue between theology and science. There are two reasons for this. First is that Heim has no meaning to theologians who participate in the dialogue between theology and science, simply because they are unable to find the relevant idea from him. For them, Heim has an outmoded idea and therefore he has no place to put the working of God within the scientific world. Second, Heim was forgotten in the world of theology even at his time. Even though he was published many books, his theology had no influence on the world of theology at that time. Barth and Bultmann were the main figures for his time. Theology at that time is indebted to Barth and Bultmann, not on Heim. Heim has spread his idea of God throughout Germany and around the world: in that case, we can only find Heim`s influence on the younger generations who were concerned about the faith. Heim was a famous figure for youth who wanted to know the meaning of believing in God, but not for theologians. But, the presumption that Heim had no place in contemporary theology was due to the misconception about his theology. Heim has a unique idea about relating God to the world of science or vice versa. Heim was a pioneer who knew the problem of God in the world of science, and he endeavored to anchor God in the world of science. He had a massive knowledge of physics, and he wrestled with science because science assumed the absolute certainty about reality. Heim thought that science needed to be demythologized, whereas other theologians thought that the Bible needed to be demythologized. I think that the relevance of Heim`s thought for the modern theology lies in his intention that science needs to step down from claiming the ultimatum about how really things are. In other words, theology needs to listen to Heim`s voice and change presumption about science that scientific discovery about nature can change the notion of christian idea of God in order to suit God in the world of science. I do not claim that Heim`s idea of God has no problem at all. For the contrary, his way of presenting the idea of God looks strange to theologians who are at front in the dialogue between theology and science. However, the fact that modern theology is unfamiliar with Heim`s methodology does not give an excuse for ignoring Heim`s voice. Therefore, I will present Heim`s theology in a way that will clarify its place between theology and science.