Date Terumune (伊達 輝宗, DAH-tay; 1544 – November 29, 1585) was a Japanese samurai clan leader of the Sengoku period.

[5] Later in 1578, Terumune succeeded his father Harumune; and he became the sixteenth head of the Date clan of Mutsu Province.

[7] During his campaigns unifying Japan, he sent Terumune a letter boasting how he annihilated tens of thousands in Echizen and Kaga.

[8] When Oda Nobunaga was assassinated in 1582, Terumune gave his clan's support to Toyotomi Hideyoshi in the power struggle which followed.

[11][10] Yoshitsugu stabbed Terumune to his death when he panicked as Masamune and his men caught up with him by the banks of the Abukuma River.