In forest research computer is mainly used in the analysis of experimental and survey data, in studying the complex relationships between plants and their environment and for the simulation of biological and economic situations. In forest management it finds its use in financial control of forest operations, for estimating and controlling forest production, for allocation of resources and for planning and control of new planting programs. In information management it finds its application in maintaining upto- date records of long range experiments and files of employees. Different decision making techniques such as linear programming simulation, research and network planning are described and important programs developed by United States Forest Service are discussed.