The 9th International Symposium on Big Data and Applied Statistics (ISBDAS 2026) will be held from March 6 to 8, 2026, in Guangzhou, China. This conference aims to establish a high-level platform for global experts, engineers, researchers, and industry professionals in "Big Data" and "Applied Statistics" to share cutting-edge research and technological innovations, track academic trends, broaden research perspectives, foster in-depth scholarly collaboration, and accelerate industrial partnerships for academic achievements. Organized by the Artificial Intelligence and Higher Education Research Branch of Guangdong Higher Education Association and co-organized by Beijing Normal University's Institute of Artificial Intelligence and Future Networks and the Artificial Intelligence and Big Data Research Base, ISBDAS has built a strong legacy with past editions held in: Guangzhou (2025), Beijing (2024), Shanghai (2023), Xining (2022), Dali (2021), Kunming (2020) and Dalian (2019).