Nanbu Toshitada (南部利済, 18 October 1797 – 29 May 1855) was a late Edo period Japanese samurai and the 12th daimyō of Morioka Domain in northern Japan.

He returned to secular life in 1820 by order of the domain government and served as advisor to the young Nanbu Toshimochi, who subsequently appointed him as heir.

He was received in formal audience by Shōgun Tokugawa Ienari who awarded him with the courtesy title of Shinano-no-kami and junior 4th court rank, lower grade.

His quick actions and the poor state of the domain's finances caused much disaffection among his retainers and also led to a peasant revolt in 1836.

He then forced his son aside in 1848, making Toshitomo's younger brother Nanbu Toshihisa nominal daimyō while he continued to rule in all but name.