This research aimed to assess common bean genotypes for genetic diversity, heritability, and genetic advancement under varying concentrations of sodium chloride (NaCl) in hydroponic systems. Eight common bean genotypes were grown and evaluated in a two-factor completely randomized design with three replications in three NaCl concentrations (0 mM, 150 mM, 300 mM) at the Molecular lab of the Department of Plant Breeding and Genetics, The University of Agriculture, Peshawar, during 2022. Analysis showed substantial differences among eight genotypes for all traits across three NaCl levels. Mean ranges under 0, 150, and 300 mM NaCl concentration 10.93 to 20.87 cm, 8.71 to 21.43 cm, and 11.64 to 21.58 cm for hypocotyl length, and from 13.02 to 23.63, 10.51 to 15.9, and 6.96 to 12.99 for chlorophyll content, and from 32.33 to 46.67 cm, 34.00 to 57.33 cm and 33.50 to 45.67 cm for plant height, and from 10.73 to 15.30 cm, and 11.10 to 15.30 cm and 10.00 to 15.70 cm for epicotyl length. Heritability estimates ranged from 0.62 to 0.93 for various traits of common bean genotypes in all three levels of NaCl. The highest heritability was recorded for hypocotyl length (0.93) in 150mM NaCl concentrations, while the lowest heritability was recorded for plant height (0.62) in 300mM NaCl and also for hypocotyl length in 0mM 0.62 NaCl concentrations. The highest genetic advance value was estimated for plant height (8.26) in all NaCl concentrations, i.e., 4.10 in 0 mM NaCl, 8.26 in 150 mM NaCl, and 3.96 in 300 mM NaCl, respectively. Based on the current experiment, genotypes SW-32, GL299, and GL-287 appeared to be superior, with the highest values for plant height, chlorophyll content, and hypocotyl length. These results are recommended for future breeding programs aimed at improving salt tolerance in common bean genotypes.