This book constitutes the refereed post-conference proceedings of the 13th International Conference on Mobile Networks and Management, MONAMI 2023, held in Yingtan, China, in October 2023. The 21 full papers were carefully reviewed and selected from 41 submissions. The papers are divided into groups of content as follows: Wireless Communication and Networks; Network Security and Blockchain; Image Processing and Computer Vision; Distributed Computing; Emerging Applications.