The seventeenth edition of the annual International Conference on Particle Physics and Cosmology - COSMO 2013 - will be held at the Centre for Theoretical Cosmology, Cambridge, UK in the week of September 2-6, 2013.The COSMO series is one of the major venues of interaction between cosmologists and particle physicists. The year 2013 being the year of the first release of cosmological results from the Planck satellite, we consider it more important than ever to encourage such interactions between the fields. COSMO 13 will have an excellent line-up of plenary speakers. Some of the topics to be discussed at COSMO include:Results from the Planck satelliteResults from the Large Hadron ColliderThe large-scale structure of the UniverseCosmic accelerationString cosmologyPrimordial cosmologyNumerical cosmologyParticle astrophysicsDark matter