The International Conference on the Structure of Surfaces series provides a forum to assess the status of atomic-scale and nanoscale structure determination of surfaces, interfaces and nanostructures, and the relationships between such structure and physical and chemical properties. Topics include atomic positions, bond lengths and bond angles of clean and adsorbate surfaces, interfaces and nanostructures; nanoscale morphology; their roles in determining electronic, optical, vibrational, chemical and dynamic properties; applications to phase transitions, disordering, defect formation, crystal growth, interface diffusion, segregation and chemical reactivity. The meetings also serve to highlight the development of new and advanced experimental techniques for structure determination, and of sophisticated theoretical methods for modelling surfaces, interfaces and nanostructures. The commitment is to make each ICSOS meeting provide the most complete forum in its time where important structural challenges at surfaces, interfaces and nanomaterials are assessed with different approaches, and from which wider-ranging applications have been stimulated. The tone of each meeting is set by the choice of focus topics and invited speakers. High standards are maintained throughout by selecting further papers for presentation from the abstracts submitted. ICSOS-11 will continue to award the Surface Structure Prize (for outstanding achievement in the field of surface and interface structure) and the ICSOS Young Scientist Prize (for a current or recent PhD student in surface, interface and nanostructure). Further details are now available. ICSOS will be conducted in accordance with IUPAP principles as stated in the resolution passed by the General Assembly in 2008. In particular, no bona fide scientist will be excluded from participation on the grounds of national origin, nationality, or political considerations unrelated to science.