Surface Engineering of Polymer Membranes covers the processes that modify membrane surfaces to improve their in-service performance,meaning, to confer surface properties which are different from the bulk properties. Purposes may be to minimize fouling, modulate hydrophilicity/hydrophobicity; enhance biocompatibility, create diffusion barriers, providefunctionalities, mimic biomembranes,fabricate nanostructures, etc. First, the basics of surface engineering of polymer membranes are covered. Then topics such as surface modification by graft polymerization and macromolecule im-mobilization, biomimetic surfaces, enzyme immobilization, molecular recognition, and nanostructured surfaces are discussed. This book provides a unique synthesis of the knowledge of the role of surface chemistry and physics in membrane science.