The World Conference on Catalysis and Chemical Engineering (WCCCE-2026), scheduled to take place from April 06–08, 2026, in the dynamic city of Tokyo, Japan, is a globally recognized forum dedicated to advancing research, innovation, and industrial applications in the fields of catalysis and chemical engineering. This prestigious event will gather renowned scientists, researchers, academicians, industry leaders, and policymakers from across the world to exchange knowledge, share cutting-edge discoveries, and foster collaborations that drive sustainable development in chemical sciences. The conference will feature an extensive scientific program that includes keynote addresses, invited talks, oral and poster presentations, panel discussions, and networking sessions, covering a wide range of topics such as heterogeneous and homogeneous catalysis, photocatalysis, electrocatalysis, green chemistry, nanocatalysis, energy conversion, and reaction engineering. WCCCE-2026 aims to serve as a catalyst for meaningful dialogue and strategic partnerships among academia, industry, and government sectors, with a strong emphasis on sustainable technologies, environmental protection, and innovation-driven solutions. With its hybrid format, the conference ensures inclusive participation by allowing delegates to join both on-site in Tokyo or virtually from anywhere in the world. Participants will not only benefit from insightful scientific sessions but also experience the rich culture and hospitality of Japan. This is a must-attend event for anyone committed to shaping the future of catalysis and chemical engineering.