MODELS is the premier venue for the exchange of innovative ideas and experiences of model-based approaches in the development of complex systems. Since 1998, MODELS has provided a broad forum for reporting scientific progress as well as experiences stemming from practical application of model-based methods. MODELS is a highly selective conference, with an acceptance rate averaging 20% in recent years. The conference series covers all aspects of model-based development for software and systems engineering, including modeling languages, methods, tools, and their applications. Engineering models have long been used in the development of complex systems and the approach is becoming more prevalent in the design of modern software systems. MODELS 2013 will continue the MODELS history in providing the top forum for researchers and practitioners to meet and share experiences in software and systems modeling. Traditional events (e.g., Foundations/Applications track papers, Workshops, Tutorials, and Panels) will represent key venues for disseminating novel ideas in modeling research. For the 2013 conference, Demonstrations and Poster sessions will be formalized, along with the first year of the ACM Student Research Competition at MODELS! In 2013, MODELS will take place in the midst of Miami’s most popular beach area. As the 5th largest urban city in the USA, Miami is a major hub for culture, entertainment, arts, and fashion (e.g., the famous “South Beach” area). Miami has recently been named one of the USA’s cleanest cities and most walkable cities. With over 14 universities and colleges in the area, Miami also is a recognized center for education and research. We invite you to join us at this international conference and to help shape the modeling methods and technologies of the future!