Tsumaki Hiroko (妻木煕子, 1530 - November 27, 1576) was a Japanese noble woman from the Sengoku Period. She is also known as Omaki-no-kata, Omaki and Fuseya-hime, with her real name uncertain. The name Hiroko probably originated from her father's name Tsumaki Norihiro. She was the wife of Akechi Mitsuhide, a prominent general of the Oda clan, and the mother of Hosokawa Gracia, a famous Christian convert.
