The 12th annual RoboCup International Symposium was held during July 15-18, 2008 in conjunction with RoboCup 2008 Competitions and Demonstrations. The symposium represents the core meeting for the presentation and discussion of sci- tific contributions in diverse areas related to the main threads within RoboCupSoccer, RoboCupRescue, RoboCup@Home and RoboCupJunior. Its scope encompassed, but was not restricted to, research and education activities within the fields of artificial intelligence and robotics. A fundamental aspect of RoboCup is promoting science and technology among young students...