Matsudaira Katanobu (松平容頌, February 22, 1744 – August 22, 1805) was the 5th daimyō of Aizu Domain in Mutsu Province, Japan (modern-day Fukushima Prefecture).

He was presented in formal audience to Shogun Tokugawa Ieshige in 1756, and was awarded the courtesy title of Higo-no-kami.

However, these purely honorific promotions were a tremendous drain on the domain's finances, and the peasants rose in revolt over high taxation on several occasions.

Many efforts at fiscal reform were thwarted by conservative members of the clan government; however, Katanobu managed to implement severe fiscal frugality decrees, promoted rural reconstruction by encouraging sericulture and the planting of safflower and ginseng, implemented domain monopolies on wax and lacquerware, and establishing a sake brewing industry in Aizu.

During Katanobu's tenure, he dispatched 1500 Aizu samurai to Karafuto to guard against incursions by Imperial Russia.