Twenty accessions of rice bean (Vigna umbellata) were evaluated at National Agricultural Research Centre, Islamabad for different traits viz., days to maturity, pods/bunch, pod length, seeds/pod, 100-seed weight and grain yield/plant. Genetic variability and correlation patterns were studied to bring out the genetic association of different attributes toward yield. Highly significant differences were observed among the genotypes for all the characters indicating considerable range of variation among these. High genetic coefficient of variability coupled with high heritability and genetic advance was observed for 100-seed weight and yield/plant indicating the predominance of additive gene effects. For days to maturity, high heritability was associated with low genetic advance, which is an indication of dominant and epistatic nature of inheritance. Generally, genotypic correlations were higher than phenotypic correlations. Yield/plant was positively and significantly associated with pods/bunch, pod length, seeds/pod and 100-seed weight whereas days to maturity showed negative association with grain yield as well as other yield components.