Viscount Saitō Makoto, GCB (斎藤 実, October 27, 1858 – February 26, 1936) was a Japanese naval officer and politician.
Saitō was an admiral in the Imperial Japanese Navy. He was two-time Governor-General of Korea from 1919 to 1927 and from 1929 to 1931, and the 30th Prime Minister of Japan from May 26, 1932 to July 8, 1934.
Saitō was born in Mizusawa Domain, Mutsu Province (part of present-day Ōshū City Iwate Prefecture), as the son of a samurai of the Mizusawa Clan. In 1879, he graduated from the 6th class Imperial Japanese Naval Academy, ranking third out of a class of 17 cadets. He was commissioned an ensign on September 8, 1882, and promoted to sub-lieutenant on February 25, 1884.
In 1884, Saitō went to the United States for four years to study as a military attaché. Promoted to lieutenant on July 14, 1886; in 1888, after returning to Japan, he served as a member of the Imperial Japanese Navy General Staff.
After his promotion to lieutenant commander on December 20, 1893, he served as executive officer on the cruiser Izumi and battleship Fuji.