This book constitutes the thoroughly refereed proceedings of the 24th International Conference on Concurrency Theory, CONCUR 2013, held in Buenos Aires, Argentina, August 27-30, 2013. The 34 revised full papers presented together with 4 invited talks were carefully reviewed and selected from 115 submissions. The papers are organized in topics such as process semantics and modal transition systems, VAS and pushdown systems, Pi calculus and interaction nets, linearizability and verification of concurrent programs, verification of infinite models, model measure and reversibility, stochastic...