|Born||January 15, 1782|
|Died||April 23, 1837(aged 55)|
|Other names||Kaga no kami|
|Occupation||Daimy? of Odawara Domain (1796-1837)|
|daughter of Hachisuka Haruaki|
?kubo Tadazane ( , January 15, 1782 - April 4, 1837) was the 7th daimy? of Odawara Domain in Sagami Province, (modern-day Kanagawa Prefecture) in mid-Edo period Japan. His courtesy title was Kaga no Kami.
Tadazane was born in Edo in 1782 (some sources state 1778) as the son of the 6th daimy? of Odawara, ?kubo Tadaaki. He succeeded to headship of the ?kubo clan and Odawara Domain upon his father's death in 1796.
During his tenure, he reformed the domain's faltering finances, particularly through his employment of the scholar Ninomiya Sontoku, who reformed the domain's taxes and encouraged development of agriculture through immigration from other domains. In 1800, Tadazane had his start in the Tokugawa administration as a S?shaban, or Master of Ceremonies. Four years later, on January 28, 1804, he was appointed to the concurrent position of Jisha-bugy? (Magistrate of Temples and Shrines). On June 25, 1810, he became Osaka Castellan, followed by the post of Kyoto Shoshidai from April 16, 1815. As was usually the case with holders of the latter office, Tadazane became a R?j? under the sh?gun Tokugawa Ienari upon the completion of his duties in 1818 (having been recommended by Matsudaira Sadanobu). He died 19 years later, while still holding the office of R?j?, in 1837. His grave is at the clan temple of Saisho-ji in Setagaya, Tokyo.