AINA2012(The 26th IEEE International Conference on Advanced Information Networking and Applications) was held at Fukuoka Institute of Technology on 3/26-29. There were 126 papers (posted 445，accept ratio 28.3％). AINA2012 consists of 17 international workshops and is a one of the very great international conferences The contents was wide-ranging and many of them were associated with networks: Web applications, Ad-hoc networks, Wireless networks, P2P networks, Security, Fault-tolerant systems and Cloud computing.