The organizing committee of the IEEE WoWMoM workshop on Autonomic and Opportunistic Communications is glad to welcome you to the 2013 edition of AOC, that will be held in June 2013, in Madrid, Spain. The AOC 2013 workshop aims at serving as a meeting point and a forum for exchanging ideas, discussing solutions, and sharing experiences among researchers, professionals, and application developers, both from industry and academia. As with the previous five editions of the AOC workshop series, the scope of this year's workshop will remain on general issues related to opportunistic networking and computing. Yet, AOC 2013 will have a primary interest in new directions of opportunistic communications, such as service composition techniques, scenarios of co-existence with infrastructure networks, and insights to their operation coming from other disciplines such as game theory and cognitive psychology. AOC 2013 is sponsored by IEEE and IEEE Computer Society, and supported by the FP7 Fire project Scampi, the FP7 FET project Recognition, and the Network of Excellence in Internet Science (EINS).