The studies were carried out to estimate the heritabilities of body weights and body measurements in Korean native cattle on the basis of the records obtained from 15,713 heads of Korean native cattle raised at Hanwoo purebreeding region from 1987 to 1995. The heritabilities of the traits were estimated by the Becker`s(1985) methods utilizing the variance and wvariance components of sire. The heritabilities estimates of the body weights at birth, 3, 12 and 24 months of age were 0.095±0.018, 0.243±0.036, 0.372±0.041 and 0.172±0.025, respectively. The heritabilies of withers height, hip height, body length, chest depth, chest width, rump length, hip width, thurl width, hipbone width, chest girth and shank circumference were 0.075, 0.134, 0.317, 0.250, 0.171, 0.192, 0.275, 0.192, 0.218, 0.243 and 0.220 at birth, 0.183, 0.226, 0.226, 0.341, 0.101, 0.175, 0.147, 0.090, 0.191, 0.213, 0.347 and 0.108 at 3 months of age, 0.350, 0.350, 0.342, 0.384, 0.283, 0.391, 0.399, 0.421, 0.395, 0.373 and 0.387 at 12 months of age and 0.305, 0.271, 0.188, 0.209, 0.140, 0.186, 0.188, 0.168, 0.275, 0.124 and 0.312 at 24 months of age, respectively.