Understanding of interfacial properties and thermodynamics is fundamental in many research areas, including biological structure-function, molecular recognition, interfacial self-assembly, molecular engineering of soft interfaces, and molecular transport across interfaces. The application of surface-sensitive synchrotron x-ray scattering techniques has led to a major advance in the investigation of phenomena at liquid surfaces and interfaces. This workshop highlighted recent work on liquid surfaces and interfaces, including lipid-protein interactions at the air/water interface, organic/inorganic Langmuir monolayer systems, electrified liquid/liquid interfaces, liquid metal-X interfaces, surfaces of polymer liquids, and pure liquid surfaces/interfaces.