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.