Date Harumune (伊達 晴宗, DAH-tay; 1519 – January 12, 1578) was a Japanese daimyō of the Sengoku period.

At first, Tanemune had the advantage but Harumune ultimately succeeded his father as leader of the clan.

Harumune then moved to Yonezawa and worked to settle the aftermath of the war.

[2] As a special honor, Ashikaga Yoshiharu gave permission for Harumune to use one ideograph (haru-) of his name.

[3] Additionally, the Ashikaga shogunate gave Harumune power and responsibilities as tendai of Mutsu.