This book was developed by Professor S. Mostafa Ghiaasiaan during 10 years of teaching a graduate-level course on convection heat and mass transfer. The book is ideal for a graduate course dealing with the- ory and practice of convection heat and mass transfer. The book treats well-established theory and practice on the one hand; on the other hand, it is enriched by modern areas such as flow in microchannels and computational fluid dynamics–based design and analysis methods. The book is primarily concerned with convective heat transfer. Essentials of mass transfer are also covered. The mass transfer material and prob- lems are presented such that they can be easily skipped,.