The IEEE International Conference on Peer-to-Peer Computing provides a single-track forum for presenting new research results on all aspects of P2P computing. It is the oldest and largest conference dedicated to P2P computing, and has been held every year since 2001. IEEE P2P'13 marks the thirteenth anniversary of the conference. IEEE P2P'13 will be hosted by the University of Trento, Italy, on September 9-11, 2013.