MSN 2023 provides a forum for academic researchers and industry practitioners to exchange new research ideas, present their progress, and identify future directions in the field of mobility, sensing and networking. The conference solicits submissions from all research areas related to mobility, sensing and networking, as well as their corresponding systems and applications. Topics of interests are covered by the tracks: (1) Mobile & Wireless Sensing and Networking; (2) Edge Computing, IoT and Digital Twins; (3) Security, Privacy, Trust, and Blockchain; (4) Big Data and AI; (5) Systems, Tools and Testbed; and (6) Applications in Smart Cities, Healthcare and Other Areas.