Abstract: In order to test the correlation between grain yield and yield components five promising mungbean (Vigna radiata L.) germplasm i.e. two each from Swat, Dir and one from Chitral were planted at the Research Farm of NWFP Agricultural University Peshawar on May 22, 1997. Grain yield varied significantly from 719 (CH.MB.1) to 1121 kg/ha (D.MB.7). Grain yield showed positive correlation with pod length, pods per plant, 100-seed weight and harvest index and negative correlation with days to maturity, plant height, branches per plant, seeds per pod and dry matter yield. Dry matter yield showed positive correlation with days to maturity, plant height and branches per plant and negative correlation with pods per plant. Pods per plant showed negative correlation with days to maturity, plant height and branches per plant. Days to maturity showed positive correlation with plant height and branches per plant. The correlation between plant height and branches per plant was also positive.