Nanbu Toshinao (南部 利直, 13 April 1576 – 1 October 1632) was an early Edo period Japanese samurai, and the 1st daimyō of Morioka Domain in northern Japan.

In 1590, Nobunao submitted to Toyotomi Hideyoshi during the SIege of Odawara and was confirmed as daimyō of his existing holdings in northern Mutsu province (the districts of Nukanobu, Hei, Kazuno, Kuji, Iwate, Shiwa and Tōno).

During the same year Maeda Toshiie, one of Hideyoshi’s closest generals, presided over Toshinao's genpuku ceremony, and granted him the kanji of "Toshi" in his name.

[1] Hideyoshi also helped suppress the Kunohe Rebellion, which enabled Nobunao and Toshinao to unite the many local factions of the Nanbu clan into a more centralized administration.

[1] As daimyo, Toshinao developed copper mines in his territories, which helped place the domain on a stable financial footing.