The 2013 International Conference on Advanced Capacitors, organized by The Electrochemical Society of Japan, will be held in May 27 - May 30, 2013, at Osaka, Japan.Various new aspects on all types of capacitors will be discussed in this four-day conference. 　The conference will cover all fundamental and practical aspects of capacitors. Topics concerning capacitor performances for power uses such as electric vehicles and energy back-up (storage) application as well as materials for advanced capacitors (e.g., carbonaceous materials, polymers, metal oxides, composites), and new concept for fabricating high performance energy and power storage devices are welcome.