This book, LNCS 15225, constitutes the refereed proceedings of the 19th International Conference on Green, Pervasive, and Cloud Computing, GPC 2024, which took place in Macao, China, during September 27–30, 2024.   The 13 full papers were carefully reviewed and selected from 33 submissions. They were organized in topical sections as follows: Cyber-Physical-Social Systems; Edge Intelligence; Industrial Digitization and Applications; Mobile Sensing and Computing; and Wireless and Ubiquitous Networking.