SIMUTools 2012 is the fifth International Conference on Simulation Tools and Techniques. This edition, which builds on the success of the previous four editions (2008-2011), will focus on all aspects of simulation modeling and analysis. High quality papers are sought on simulation tools, methodologies, applications, and practices.The aim of the conference is to bring academic and industry researchers together with practitioners from both the simulation community and the user communities. The conference will address current and future trends in broad simulation techniques, models and practices, and strive to foster interdisciplinary collaborative research in these areas. The conference encourages submission of papers of significant theoretical and/or practical research contributions.The event is endorsed by the European Alliance for Innovation, a leading community-based organisation devoted to the advancement of innovation in the field of ICT