Imagawa Ujizane (今川 氏真, 1538 – January 27, 1615) was a Japanese daimyō who lived in the Sengoku through early Edo periods. He was the tenth head of the Imagawa clan, and was a son of Imagawa Yoshimoto and the father of Imagawa Norimochi and Shinagawa Takahisa.
Ujizane was born in Sunpu Domain; he was the eldest son of Imagawa Yoshimoto. In 1554, he married the daughter of Hōjō Ujiyasu (Lady Hayakawa) as part of the Kai-Sagami-Suruga Alliance. Ujizane inherited family headship in 1558, when his father retired in order to focus his attention on the Imagawa advance into Tōtōmi and Mikawa Provinces. His childhood name was Tetsuomaru (龍王丸).
Fall of the Imagawa clan
In 1560, Yoshimoto was assassinated in the Battle of Okehazama, the province of Totomi and Mikawa went into chaos. Ujizane succeeded his father, but the chaotic state that the Imagawa clan was in, made many vassals betray Ujizane. His grandmother, Jukei-ni, who exercised great political power, died in 1568, motivated by this, Takeda Shingen and Tokugawa Ieyasu attacked the lands of Imagawa.
Ujizane later retaliated against the landlocked Takeda clan with a salt embargo. This had little effect because Uesugi Kenshin took the opportunity to sell salt to the Takeda, and only resulted in the downfall of the Imagawa clan. He enjoyed playing Kemari and poetry.
Later years and death
- Father: Imagawa Yoshimoto (1519–1560)
- Mother: Jōkei-in (1519-1550)
- Wife: Lady Hayakawa
- Concubine: Ihara Tadayasu’s daughter
| 10th Suruga-Imagawa family head