Tanomogi Keikichi (頼母木桂吉, 5 November 1867 – 29 February 1940) was a Japanese was a journalist, politician and cabinet minister in Taishō and early Shōwa period Japan.

After graduating from the First Higher School in Tokyo, he travelled to the United States for studies, and after his return to Japan found employment with the Hōchi Shimbun newspaper in 1896.

He also established a company to import raw film for photo journalism, and footage of the assassination of Itō Hirobumi in 1910 created a sensation.

During his tenure as Communications Minister, Tanomogi promulgated an aggressive five-year shipbuilding plan to expand Japan’s merchant fleet by six million tons with government subsidies.

Although the plan had the support of the Imperial Japanese Army, who say it as a stepping stone to further state control of the economy, strong opposition by the business community delayed its implementation until after Tanomogi left office in 1938.