This LNCS conference 3-volume set constitutes the proceedings of the 17th International Conference on Social Networks Analysis and Mining, ASONAM 2025, in Niagara Falls, ON, Canada, during August 25–28, 2025.The 32 full papers together with 33 short papers included in this volume were carefully reviewed and selected from 134 submissions. The remaining 44 papers included in these proceedings are from the following tracks and workshops: the Multidisciplinary Track, the Industrial Track, the PhD Track, FAB 2025, and FOSINT-SI 2025. The conference covers a wide spectrum of research contributions to the foundations and applications of social networks.