This book constitutes the refereed proceedings of the 26th IFIP WG 6.1 International Conference on Coordination Models and Language, COORDINATION 2024, held in Groningen, The Netherlands, in June 2024, as part of the 19th International Federated Conference on Distributed Computing Techniques, DisCoTec 2024. The 8 full papers, 7 tool papers, 1 short paper and 1 survey paper included in this book were carefully reviewed and selected from 28 submissions. This conference provides a well-established forum for the growing community of researchers interested in models, languages, architectures, and implementation techniques for coordination.