Globally, 140 billion metric tons of biomass wastes are generated every year from agriculture equivalent to about 50 billion tons of oil. As raw materials, biomass wastes have attractive potentials for both large-scale industries and community-level enterprises. For efficient and effective conversion, appropriate selection of technologies is one of the vital pre-conditions. This compendium is compiled to assist in the selection process for the technologies. The technologies for different type of waste agricultural biomass and different sizes are also considered. Technologies listed in the Compendium are limited to those that use cellulosic agricultural waste biomass.