The current study used thirty mustard genotypes to evaluate the genetic variability, heritability, and genetic advance as a percentage of the mean. During Rabi 2020-21, all thirty genotypes were evaluated in a randomised block design with three replications. For all the features, analysis of variance revealed a significant level of variability across the genotypes, indicating a broad range of variability across the genotypes. Number of secondary branches per plant recorded the highest PCV and GCV followed by number of siliquae per plant, seed yield per plant, number of seeds per siliquae, number of primary branches per plant. This suggested that the environment had the least impact on the manifestation of these features. For all of the qualities, the difference between GCV and PCV values was obtained at low. This suggested that the prevalence of additive gene effects for these characters, and hence selection based on these qualities, might be profitable. High heritability coupled with high genetic advance as per cent of mean were observed for days to 50% flowering, plant height, number of primary branches per plant, number of secondary branches per plant, length of main raceme, number of siliquae on main raceme, number of siliquae per plant, length of siliqua, number of seeds per siliqua, 1000 seed weight, biological yield per plant, seed yield per plant and harvest index. Days to 50% flowering, days to maturity, number of primary branches per plant, number of secondary branches per plant, number of siliquae per plant, 1000 seed weight, biological yield per plant and harvest index has shown positive and high significant association with seed yield per plant, while negative and highly significant in length of siliquae and number of seeds per siliqua with seed yield per plant. Path analysis revealed that positivedirect effect on seed yield per plant per plant was observed by days to 50% flowering, plant height, number of siliquae per plant, number of seeds per siliqua, 1000 seed weight, biological yield per plant, harvest index. Whereas days to maturity, number of primary branches per plant, number of secondary branches per plant, length of main raceme, number of siliquae on main raceme, length of siliqua, oil content has shown the negative direct effect on the seed yield per plant. As a result, these traits should be prioritised in the selection of high-yielding mustard genotypes.