"Graph Factors and Matching Extensions" deals with two important branches of graph theory - factor theory and extendable graphs. Due to the mature techniques and wide ranges of applications, factors and matchings become useful tools in investigation of many theoretical problems and practical issues. This book includes basic techniques, theoretical foundations, as well as recent advances in the field. It also discusses open problems and conjectures to inspire the readers. This book is primarily aimed at researchers and graduate students in graph theory and combinatorics in general. However, all the necessary prerequisites are developed from scratch and should be accessible to upper-level undergraduate students with prior knowledge of graph theory. Dr. Yu is a professor in the Department of Mathematics and Statistics at the Thompson Rivers University of Canada. His research interests include graph theory and combinatorial optimization. Dr. Liu is a professor in the School of Mathematics at Shandong University of China. Her research interests include graph theory and matroid theory.