The 12th International Conference of Networks, Communications, Wireless and Mobile Computing (NCWC 2026) serves as a premier forum for researchers, academicians, industry professionals, and practitioners to present innovative research and exchange ideas in the rapidly evolving fields of computer networks, communications, wireless systems, and mobile computing. As modern networked systems continue to expand in scale, complexity, and capability, NCWC 2026 seeks significant contributions that advance both the theoretical foundations and practical implementations of wired and wireless communication technologies.