Welcome to the 2023 3rd International Conference on Smart Cities, Automation & Intelligent Computing Systems (ICON-SONICS 2023) to be held on 06-8 December 2023 in BALI, Indonesia. The conference is organised by Universitas Multimedia Nusantara and technically sponsored by IEEE Indonesia Section. ICON-SONICS focuses on both theory and applications mainly covering the topics of smart cities, automation and Intelligent Computing Systems.