Deformation Processing of High Entropy Alloys provides a comprehensive examination of the unique mechanical properties and advanced processing techniques associated with high entropy alloys (HEAs). Beginning with a clear introduction to the fundamentals of HEAs, the book distinguishes these innovative materials from conventional alloys, highlighting their distinctive microstructural evolution and deformation mechanisms. Readers gain insight into the influence of alloy composition and crystal structures, specifically focusing on FCC- and BCC-based HEAs, as well as the critical roles of stability, metastability, and thermomechanical treatments in shaping their performance. Further, the book delves into a variety of deformation processing methods, including solid-state techniques and additive manufacturing, offering practical guidance for researchers and engineers. Modeling and simulation strategies are explored, enhancing understanding of HEA behavior under different conditions.