This book constitutes the refereed proceedings of the 13th International Conference on Ad-hoc, Mobile and Wireless Networks, ADHOC-NOW 2014, held in Benidorm, Spain, in June 2014. The 33 revised full papers presented were carefully reviewed and selected from 78 submissions. The papers address such diverse topics as routing, cellular networks, MAC and physical layer, mobile ad hoc, sensor and robot networks, localization and security, vehicular ad-hoc networks.