This book constitutes the jointly proceedings of the 3rd International Conference on Intelligent Edge Processing in the Io T Era, Edge-Io T 2022, and the 4th International Conference on Smart Governance for Sustainable Smart Cities, Smart Gov 2022. Both conferences were held online due to COVID-19 pandemic in November 2022, held as virtual events, in November 16-18, 2022.The 12 full papers were selected from 31 submissions. Smart Gov 2022 was to promote the development of secure and sustainable smart cities with smart governance, while the theme of Edge-Io T 2022 was to address the decentralization of contemporary processing paradigms, notably Edge processing, focusing on the increasing demand for intelligent processing at the edge of the network, which is paving the way to the Intelligent Io T Era". Both the EAI Smart Gov 2022 and EAI Edge-Io T 2022 conferences were co-located with EAI Smart City360 international convention.The papers are organized in the following topical sections: Edge-Io T Applications; Io T Architectures, Forecasting and Adversarial Training; Artificial Intelligence and Machine Learning for smart governance; and Smart Transportation.