Saitō Tatsuoki, Japanese daimyō (born 1548)

Saitō Uhyōe-Taihitsu Tatsuoki was a daimyō in Mino Province during the Sengoku period and the third generation lord of the Saitō clan. He was a son of Saitō Yoshitatsu. His mother was daughter of Azai Hisamasa and nephew of Azai Nagamasa, a grandson of Saitō Dōsan. He was also a nephew of Oda Nobunaga's first wife, Nohime herself, a daughter of Saitō Dōsan.

August 14 is the 226th day of the year in the Gregorian calendar; 139 days remain until the end of the year.