Genetic variability in cucumber plants was studied to help improve breeding efforts. Different cucumber genotypes were grown in Nepal, and their traits like fruit weight and size were measured. Some traits, like fruit weight, showed a lot of variation among the genotypes. Traits like fruit diameter and days to maturity also had some variation. The heritability of these traits ranged from medium to high, with days to germination being the most heritable. Fruit yield was found to be positively correlated with fruit diameter but negatively correlated with days to flowering. Traits like weight per fruit and days of germination were identified as good indicators for selecting plants for breeding programs due to their high variability and heritability.