‘Ganghan’ is a high-yielding soybean (Glycine max L. Merrill) cultivar developed for improved shattering resistance and suitability for mechanized harvesting. It was bred through pedigree selection after an artificial cross between ‘Taeseon’ (female parent) and ‘Cheonga’ (male parent) in 2015. ‘Ganghan’ is a determinate type with an average main stem length of 65 cm and first pod height of 19.6 cm, which is favorable for mechanical harvesting. Compared to the control cultivar ‘Daewonkong,’ it showed stronger lodging tolerance and carried a genetic allele associated with pod shattering resistance. In disease resistance evaluations, it exhibited higher resistance than ‘Daewonkong’ to soybean mosaic virus (G6H), bacterial pustule, and black root rot. Regarding seed quality, it contained 38.8% protein, 17.6% oil, 86.1% unsaturated fatty acids, and 3,124 μg/g total isoflavones. The tofu yield was 232%, with mechanical properties and color comparable to ‘Daewonkong.’ In fermentation processing tests, ‘Ganghan’ recorded a γ-PGA content of 11.4 mg/g and amino nitrogen content of 390 mg%, indicating potential use in traditional fermented soy foods. In regional yield trials (RYT) conducted across 10 locations from 2020 to 2022, ‘Ganghan’ had an average yield of 3.58 tons/ha, 14% higher than that of ‘Daewonkong’. The adoption and expansion of ‘Ganghan’ is expected to contribute to increased domestic soybean productivity, harvest efficiency, and cultivation stability under changing climate conditions, thereby improving the domestic soybean self-sufficiency rate (Registration No. 10459).