Baron Utsumi Tadakatsu (内海 忠勝, September 12, 1843 – January 20, 1905) was a Japanese bureaucrat, statesman and cabinet minister, active in Meiji period Empire of Japan.

As a youth, he participated in the Kinmon Incident in Kyoto, where pro-sonnō Jōi Chōshū forces sought to seize control of the Emperor to overthrow the Tokugawa shogunate.

After the Meiji Restoration, he went to Tokyo and entered into service of the new Meiji government, and was selected as a member of the 1871 Iwakura Mission, visiting the United States, Great Britain and other European countries.

While Utsumi was Governor of Nagasaki, he hosted former United States President Ulysses S. Grant on his visit to Japan.

Utsumi was ennobled with the kazoku peerage title danshaku (baron) in 1887.