This book constitutes the proceedings of the 13th International Conference on Service-Oriented Computing, ICSOC 2015, held in Goa, India, in November 2015. The 23 full, 9 short, and 5 demo track papers presented in this volume were carefully reviewed and selected from 132 submissions. The research track papers are organized in topical sections named: internet of services/things; data services and cloud platform management; cloud services management; service composition; business process management; cloud services; QoS and trust; service composition.