The Twenty-First International Conference on Interdisciplinary Social Sciences invites researchers and scholars to submit their work addressing the conference’s core themes and the 2026 Special Focus. This year’s special focus, “Bridging Boundaries: Collaborative Solutions to Complex Social Issues in an Interconnected World,” encourages interdisciplinary approaches to addressing pressing global challenges through cooperation and innovation. In addition to the special focus, the conference welcomes research aligned with its annual themes: Social and Community Studies; Civic and Political Studies; Cultural Studies; Global Studies; Environmental Studies; Organizational Studies; Educational Studies; and Communication Studies. Contributions that engage with one or more of these areas are especially encouraged, as the conference aims to foster dialogue and collaboration across diverse disciplines and perspectives.