The 3rd International Conference on Gravitation, Astrophysics and Cosmology (ICGAC 2027) will be held on May 26–27, 2027 in Berlin, Germany. This international scientific conference aims to bring together researchers, scientists, academicians, and industry experts from around the world working in the fields of gravitation, astrophysics, cosmology, and theoretical physics. The conference provides a global platform to present and discuss recent advances, emerging theories, and cutting-edge research in fundamental physics and space science. It encourages the exchange of innovative ideas and fosters collaborations between theoretical and experimental researchers. The scientific program will include plenary lectures, keynote talks, invited presentations, oral sessions, poster presentations, and young researcher sessions, covering a wide range of topics in gravitation, black holes, cosmology, quantum gravity, astrophysical phenomena, and related areas. ICGAC 2027 aims to promote international collaboration and provide valuable networking opportunities for participants from academia and research institutions. The conference will also support early-career scientists by offering a platform to showcase their research work. We welcome the submission of abstracts and participation from all interested researchers in the field.