AVRDC has been actively involved in a coordinated, multidisciplinary effort to improve mungbean during the past 15 years. The world`s largest mungbean base collection is maintained at AVRDC. A majority of the collection has been evaluated for agronomic characters, nutritional components, and resistance or tolerance to the major pests and diseases. A modified bulk-pedigree breeding method, with disruptive seasonal selection, is commonly practiced to screen the segregating and advanced generations. The seasonal diversity of pests, diseases, photoperiod and thermal variation at AVRDC allows the effective selection for resistance/tolerance to various biotic and abiotic stresses. Annually, the selected breeding lines undergo a series of replicated yield trials both at AVRDC and in many parts of the world. AVRDC`s mungbean program has accomplished the following: increased the yield potential of mungbean to about 2.7 t/ha from a low of 0.3 to 1 t/ha; developed resistance to Cercospora leaf spot and powdery mildew; bred new lines which are less photoperiod sensitive; synchronized maturity; improved plant-type with pods above the canopy; and improved tolerance to lodging and pod shattering. AVRDC lines have been officially released as new cultivars 25 times in 15 countries and a number of AVRDC accessions and breeding lines are currently being used by national mungbean breeding programs. The present and future strategies of the AVRDC mungbean improvement program are discussed. [AS]