"Differential Inclusions in a Banach Space" is a comprehensive monograph that explores the study of differential inclusions in a Banach space. This revised and expanded edition offers a unified approach to the analysis of differential inclusions, whose values come from compact, not necessarily convex subsets. The work relies on modern methods of functional analysis, general topology, as well as the theory of multivalued mappings and continuous selectors. The monograph is divided into five chapters and an appendix, with the first chapter remaining unchanged and focusing on multivalued differential equations. The subsequent chapters have been significantly revised and include the author's recent results, providing new insights into the existence of solutions and the properties of multivalued selectors. This publication is aimed at professionals and students who wish to engage with the theoretical foundations and applications of differential inclusions.