The 13th International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS2011 is held on Grenoble, France from October 10 to 12. There were 29 full papers and about 60 participants. The topics included were Self-Stabilization, Fault-Tolerance, Dependable Systems, Ad-Hoc and Sensor and Dynamic Networks mainly. Other topics included were Security, Safety and P2P. There was invited talk of Self-Stabilization by Prof.Masuzawa on the first day.