This book describes both structured and unstructured mesh generation techniques. It briefly covers the structured mesh generation and discusses in more detail the algebraic multi-block technique. The main part of this book covers unstructured mesh generation using the advancing front, paving and Delaunay techniques. The Delaunay method is described in two and three dimensions. Both theoretical and implementation issues are discussed in detail in this book. An integrated framework that is used for the two dimensional unstructured methods is also described in it. The common features of the framework include: accurate control over mesh size; boundary refinement procedures; and post-processing tasks such as smoothing. It also presents Methods to convert triangular meshes to quadrilateral meshes. The Mesh quality of the different mesh generation procedures is also addressed with some examples. It will be of interest to engineers, computer scientists and mathematicians working on mesh generation and finite element methods. The C source code for the procedures described in this book is available via the authors' website.