Lecture Notes in Computer Science

This book constitutes the proceedings of 22nd International Colloquium on Theoretical Aspects of Computing, ICTAC 2025, which took place in Marrakesh, Morocco, during November 24–28, 2025.The 21 full papers, 2 short papers and 1 tool paper presented in this book were carefully reviewed and selected from 64 submissions. The papers were categorized into the following topical sections: Invited Papers; Tutorial; Verification and Synthesis; Session Types; Logic and Theorem Provers; Probabilistic Systems; Automata; Cryptography and Choreography; Algorithms and Complexity; and Tool and Short Papers.