The purpose of the Colloquium is to provide an exploratory multi-disciplinary workshop where engineers, mathematicians and physicists can meet and discuss about the latest trends in mathematical modelling, computational methods and experimental research on contact mechanics and coupled problems in surface phenomena. Areas of interest regard the solution of contact problems with smooth or rough boundaries in the presence of multiple fields, under small or large displacements. Selected topics: fluid-structure interaction at structural interfaces; thermo-hygro-mechanical coupling at interfaces; fracture and contact at interfaces; multi-physics interface problems in materials for energy applications; coupled tangential and contact problems; optimization of surface phenomena.