Interfaces play an important role in our daily life, and in the world around us. An interface is the boundary between two phases where the properties or behavior of one phase (e.g. fluid) differs from those of the adjoining phases (e.g. gas or solid). Interfacial engineering is a cross-disciplinary subject in which the scientists and engineers design and optimization of performance of new materials and processes. Recent developments in modern technologies which utilize high-performance, multifunctional materials involve new materials, composites and processes in which interfaces play a crucial role. Examples include nano- and micro-scale systems, micro-architected materials produced using subtractive or additive manufacturing, and materials that can withstand extreme environments. Applications include adhesives and coatings, adsorption and ion exchange, alloys, ceramics, fibers, plastics, and powder metallurgy, microelectronic fabrication and imaging processes, petroleum recovery and processing and other industrial applications. This short course will cover fundamental understanding of interfacial transport phenomena and introduce simulation techniques to model and predict the dynamics of interfaces in a variety of multi-material and multi-phase applications.