Insect pests, diseases and fire are the three worst enemies of forest. Amongst above insect pests rank first in causing damage to forest trees. The book contain 22 chapters. The introduction Contain national and international status of forestry and historical account of forest entomology. Chapters 2 to 21 are devoted for description of insect pests with respect to distribution, marks of identification, life cycle measures on highly economically important 20 crops of forest viz., Teak, Deodar, Shisham, Asan, Rubber, Oak, Semul, Willow, Walnut, Silverfir, Mahogany, Poplar, Spruce, Pine, Bamboo, Sal others. Since pesticides lead several serious problems to man and environment, more emphasis is given on biological approaches while suggesting control measures of forest pests. The book is written in simple language with sketches and photo-graphs relevantly supportive for understanding the various concepts of pests and their management in forest. This is unique book on forest pest management in the form of text book. The book will be stimulatory and helpful to students, teachers researchers and silviculturists.