Nanbu Yukinobu (南部行信, 11 September 1642 – 29 November 1702) was an early to mid-Edo period Japanese samurai, and the 4th daimyō of Morioka Domain in northern Japan.

[1] Yukinobu was born in Morioka as the eldest son of Nanbu Shigenobu, and was received in formal audience by shōgun Tokugawa Ietsuna on 28 April 1664.

[1] Under Yukinobu’s tenure, he developed Hōjutsu as one of the martial arts of the domain, and was permitted to hold a demonstration in front of Shogun Tokugawa Tsunayoshi.

However, also under his tenure, the Kazuno mines developed by his father did not produce the expected amount of revenues, and a crop failure from 1694 to 1695 lend to extensive famine throughout the domain.

Development of new rice lands and public works projects were attempted, along with a halt to military horse breeding and increased fiscal austerity measures, but to little effect.