This book constitutes the proceedings of the 25th International Conference on Passive and Active Measurement, PAM 2024, held as a virtual event from March 11–13, 2024.The 14 full papers and 13 short papers presented in this volume were carefully reviewed and selected from 64 submissions. The papers are organized in the following topical sections: Network Security, Routing, Satellite Networks, Topology, Transport Protocol and User Privacy.