Saitō Tatsuoki

In this Japanese name, the family name is "Saitō".

Saitō Uhyōe-Taihitsu Tatsuoki (斎藤 右兵衛・大筆 龍興, Saitō Uhyōe-Taihitsu Tatsuoki, 1548–August 14, 1573) was a daimyo in Mino Province during the Sengoku period and the third generation lord of the Saitō clan. He was a son of Saitō Yoshitatsu, and a grandson of Saitō Dōsan. He was also a nephew of Oda Nobunaga's first wife, Nōhime, herself a daughter of Saitō Dōsan.

Saitō Tatsuoki succeeded his father at the age of 14. He was, however, an incapable ruler; unlike his father and grandfather.

Tatsuoki became involved in a bitter rivalry with Oda Nobunaga, and lost to him decisively in 1564. He survived, but from this point on the Saitō clan were no longer a significant faction in the power struggles of the Sengoku period.

This article incorporates text from OpenHistory.