The current global energy crisis demonstrates that energy is a fundamental aspect of international relations and politics, as well as the driving force behind social progress. This thesis aimed to highlight the relationship between geothermal energy and geopolitics, which has received little academic attention. In the literature review, the technical characteristics, technologies, and applications of geothermal energy, along with its competitive technological and economic advantages are elucidated. Subsequently, the geopolitical value that geothermal energy possesses is presented and discussed, with a special focus on the concept of geopolitics, its prominent theoreticians, and the elements that synthesize the contemporary geopolitical landscape. Highlights on the geopolitical significance of geothermal energy were compiled and presented, sourced from leading international institutions and research studies. This thesis contributed to the state of the art by demonstrating how this renewable energy source, which is expected to become an essential component of the global green energy future, is capable of mitigating climate change, altering the dependance relations between countries, enhancing energy security, and thus influencing global politics, despite its current marginal role.