Masanori Katsu (勝 正憲, Katsu Masanori, 21 May 1879 – 11 November 1957) was a Japanese bureaucrat, politician and cabinet minister in the Taishō and early Shōwa periods of the Japan.

Katsu was born in Fukuoka Prefecture, as the eldest son of a samurai retainer of Kokura Domain.

He graduated with a law degree from Tokyo Imperial University in 1905, after which he worked as a bureaucrat at the Ministry of Finance, and was assigned to various local and regional tax offices and customs offices in the course of his career.

In January 1940, he was appointed Communications Minister in the Yonai administration[1] .

An early supporter of the Imperial Rule Assistance Association, he was chairman of General Affairs.