This book constitutes the refereed post-conference proceedings of the 6th International Conference, on Social Computing, ICSC 2025, held in Shanghai, China, during December 12–13, 2025.

The 22 full papers included in this book were carefully reviewed and selected from 73 submissions. The papers have been organized in the following topical sections as follows: Advancements in methods for the broadly defined field of social computing; Online social network analysis, mining, and modeling; Large-scale social media analytics and intelligence; Trust, privacy, security, and fairness in social systems; Applied social computing applications in diverse areas such as health and finance; Governance, policy, ethical, and legal challenges of emergent social technologies.