The National research council of Science and Technology (NST), the National Institute of Green Technology (NIGT), the Korea Institute of Civil Engineering and Building Technology (KICT), the Asian and Pacific Training Centre for Information and Communication Technology for Development (APCICT), and other Korean Government-funded Research Institutes (GRIs) are organizing the South-East Asia Subregional Workshop on Green and Secure Smart City Development on 6 to 9 December 2023 in VKIST, Hoa Lac, Viet Nam.