This book constitutes the refereed conference proceedings of the 6th EAI International Conference on Emerging Technologies for Developing Countries, AFRICATEK 2023, held in Arusha, Tanzania, during December 11-13, 2023. The 11 full papers in this book were carefully reviewed and selected from 39 submissions. They were organized in topical sections as follows: smart infrastructure and urban management; data security and digital technologies; economic growth and social development; health and well-being; and sustainability and environmental management.