This book provides a comprehensive review of current lentil research. It contains 26 chapters covering topics on lentil global production, supply and demand; origin, phylogeny, domestication and spread; plant morphology, anatomy and growth habit; agroecology and adaptation; genetic resources collection, characterization, conservation and documentation; genetic enhancement for yield and yield stability; breeding for short season environments; improvement in Developed Countries; advances in molecular research; breeding and management to minimize the effects of drought and improve water use efficiency; soil nutrient management; cropping systems; biological nitrogen fixation and soil health improvement; mechanization; disease, pest and weed management; seed quality; postharvest processing and value addition; and food preparation and use. The last chapter presents field-based evidence of adoption of improved lentil cultivars from two cases: Bangladesh and Ethiopia.