was a Japanese samurai of the early Edo period. The second son of the famous and powerful daimyō Date Masamune, he succeeded his father as lord of Sendai. Although he was the second son, his half-brother Date Hidemune was born by Lady Iisaka, a concubine, and was not eligible to rule. When Tadamune died in 1658, his son Tsunamune became daimyō but was removed soon afterwards in a noble family dispute known as the Date Sōdō or Date Disturbance.