We have the honor to welcome you to the sixth RoboCup Open competitions in Iran. The RoboCup IranOpen 2011 will be held in Tehran during 5-9 April 2011. Iranian RoboCup National Committee and Qazvin Azad University as organizers of this event wish all the participants success in the competitions. We shall try to make the 2011 competitions and symposium even more enthusiastic and put all the efforts in our power to make an appropriate environment to present and share scientific achievements in the areas of AI & Robotics..