The 3rd International Congress Complex Systems in Medicine and Sport (ICCSMS2010) will take place in Kaunas, Lithuania, on 15 - 18 September 2010 at the Europa Royale Kaunas hotel conference centre. It is organized by Kaunas University of Medicine (KMU), Kaunas University of Technology (KTU) and Lithuanian Academy of Physical Education (LKKA). This joint Congress is intended to combine the recent major contributions of internationally recognised scientists working in different aspects of Complex Systems in Medicine and Sport.