Building on the success of its 2010, 2011, and 2012 predecessors in New Delhi, India, Shanghai, China, and Seoul, South Korea, APSys 2013 will be a lively forum for systems researchers and practitioners across the world to meet, interact, and collaborate with their peers from the Asia/Pacific region. We take a broad view of computer systems, and solicit papers on topics such as: Operating systems, including OSes for multicore and many-core architectures Virtualization, including novel VM applications File and storage systems, including designs for new storage technologies Mobile and pervasive computing Cloud computing and data center management Distributed systems Networks, including wireless technologies Unique system designs for developing countries Energy efficiency and green computing Measurement, monitoring and modeling Reliability, scalability, and fault-tolerance Security and privacy Embedded systems