The 1st International Conference on Modern Mathematical Physics (ICMMP 2026), to be held from 30 October to 3 November 2026 in Hangzhou, China, will bring together leading researchers and experts from around the world to explore the latest advances in modern mathematical physics. The conference program covers five major themes—Quantum Field Theory, String and Brane Theory, and Gravitation; Integrable Models in Condensed Matter Physics and Statistical Physics; Quantum Information and Quantum Metrology; Atomic, Molecular, and Optical Physics; and Nonlinear Dynamics and Computational Physics—offering a comprehensive platform for presenting cutting-edge research across these areas. With an outstanding lineup of speakers and a focus on fostering dialogue, collaboration, and scientific exchange, ICMMP 2026 aims to be a landmark event that pushes forward the frontiers of mathematical physics and strengthens global connections within the research community.