Tokyo Imperial University in the context of "Mayors of Tokyo"

Ichirō Hatoyama (鳩山 一郎, Hatoyama Ichirō; 1 January 1883 – 7 March 1959) was a Japanese politician who served as prime minister of Japan from 1954 to 1956. During his tenure he oversaw the formation of the Liberal Democratic Party (LDP) and restored official relations with the Soviet Union.

Hatoyama was born in Tokyo as the eldest son of politician Kazuo Hatoyama. After graduating from Tokyo Imperial University, he practiced law before entering political life, and was first elected to the Diet in 1915 as a member of the Rikken Seiyūkai. He served as chief cabinet secretary under Giichi Tanaka from 1927 to 1929, and minister of education under Tsuyoshi Inukai and Makoto Saitō from 1931 to 1934. He was one of the leading members of the Seiyukai prior to its dissolution in 1940, and during the Pacific War opposed the cabinet of Hideki Tōjō. In 1945, Hatoyama founded the Liberal Party, which became the largest party in the first post-war election, but he was purged by the American occupation authorities before taking office, and handed the post to Shigeru Yoshida. Hatoyama was de-purged in 1951, but his conflict with Yoshida over the leadership split the Liberal Party in two. Hatoyama then founded the Democratic Party in 1954.

Eisaku Satō (佐藤 栄作, Satō Eisaku; 27 March 1901 – 3 June 1975) was a Japanese politician who served as prime minister of Japan from 1964 to 1972. He was the third longest-serving and second longest-uninterrupted–serving Japanese prime minister. Satō is best remembered for securing the return of Okinawa in 1972, and for winning the Nobel Peace Prize in 1974, which stirred controversy. He was a former elite bureaucrat like his elder brother Nobusuke Kishi and a member of the Yoshida school like Hayato Ikeda.

Born in Yamaguchi Prefecture, Satō was a member of the Satō–Kishi–Abe family and the younger brother of prime minister Nobusuke Kishi. Satō graduated from Tokyo Imperial University in 1924 and joined the Ministry of Railways. After the war, he entered the National Diet in 1949 as a member of the Liberal Party, and served in a series of cabinet positions under Shigeru Yoshida, including posts and telecommunications minister from 1951 to 1952, construction minister from 1952 to 1953, and chief cabinet secretary from 1953 to 1954. Satō later joined the Liberal Democratic Party and became finance minister from 1958 to 1960 under Nobusuke Kishi and international trade and industry minister from 1961 to 1962 under Hayato Ikeda.

Takeo Fukuda (福田 赳夫, Fukuda Takeo; 14 January 1905 – 5 July 1995) was a Japanese politician who served as prime minister of Japan from 1976 to 1978.

Born in Gunma Prefecture and educated at Tokyo Imperial University, Fukuda served as an official in the Ministry of Finance for two decades before entering politics. He was first elected to the Diet in 1952, and served as agriculture, forestry, and fisheries minister in 1959–1960 under Nobusuke Kishi, as head of the party's political affairs section under Hayato Ikeda, and as finance minister (1965–1966, 1968–1971) and foreign minister (1971–1972) under Eisaku Satō, becoming his protégé. Fukuda's political life was marked by a rivalry with Kakuei Tanaka, who succeeded Satō as prime minister in 1972 and under whom Fukuda served as finance minister from 1973 to 1974. As prime minister from 1976, Fukuda formulated the Fukuda Doctrine, which pledged trust and cooperation with Asian countries, and concluded the Treaty of Peace and Friendship between Japan and China in 1978. He was succeeded as premier in 1978 by Masayoshi Ōhira.

Yasuhiro Nakasone (中曽根 康弘, Nakasone Yasuhiro; 27 May 1918 – 29 November 2019) was a Japanese politician who served as Prime Minister of Japan from 1982 to 1987. His political term was best known for pushing through the privatization of state-owned companies and pursuing a hawkish and pro-United States foreign policy.

Born in Gunma Prefecture, Nakasone graduated from Tokyo Imperial University and served in the imperial navy during the Pacific War. After the war, he entered the National Diet in 1947 and rose through the ranks of the Liberal Democratic Party, serving as chief of the Defense Agency from 1970 to 1971 under Eisaku Satō, international trade and industry minister from 1972 to 1974 under Kakuei Tanaka, and administration minister from 1980 to 1982 under Zenkō Suzuki. As prime minister, he passed large defense budgets and controversially visited the Yasukuni Shrine. A conservative contemporary of U.S. president Ronald Reagan, Nakasone privatized the Japanese National Railways and telephone systems, and favored closer ties with the U.S., once calling Japan an "unsinkable aircraft carrier". After leaving office in 1987, he was implicated in the Recruit scandal, causing the influence of his LDP faction to wane before he retired from the Diet in 2004.

Nakahama Manjirō (中濱 万次郎; January 27, 1827 – November 12, 1898), also known as John Manjirō (or John Mung), was a Japanese samurai and translator who was one of the first Japanese people to visit the United States and an important translator during the opening of Japan.

He was a fisherman before his journey to the United States, where he studied English and navigation and became a sailor and gold miner. After returning to Japan, he was elevated to the status of a samurai and was made a hatamoto. He served his country as an interpreter and translator and was instrumental in negotiating the Convention of Kanagawa. He also taught as a professor at the Tokyo Imperial University.

Shigeru Yoshida (吉田 茂, Yoshida Shigeru; Japanese pronunciation: [jo.ɕi.da (|) ɕi.ɡe.ɾɯ, -ŋe.ɾɯ], 22 September 1878 – 20 October 1967) was a Japanese diplomat and politician who served as prime minister of Japan from 1946 to 1947 and again from 1948 to 1954, serving through most of the country's occupation after World War II. Yoshida played a major role in determining the course of post-war Japan by forging a strong relationship with the United States and pursuing economic recovery.

Born in Tokyo to a former samurai family, Yoshida graduated from Tokyo Imperial University in 1906 and joined the Ministry of Foreign Affairs. He held various assignments abroad, including in China, where he advocated increased Japanese influence. From 1928 to 1930, Yoshida served as vice minister of foreign affairs, then served as ambassador to Italy until 1932. In 1936, he was considered for foreign minister in the cabinet of Kōki Hirota, but he was opposed by the Army, who strongly identified him with liberalism and friendship with Great Britain and the United States. Yoshida served as ambassador to Britain from 1936 to 1938. He largely avoided political participation during the Pacific War. During the U.S. occupation after the war's end, Yoshida served as foreign minister in the cabinets of Prince Higashikuni and Kijūrō Shidehara.

Nobusuke Kishi (岸 信介, Kishi Nobusuke; 13 November 1896 – 7 August 1987) was a Japanese bureaucrat and politician who served as prime minister of Japan from 1957 to 1960. He is remembered for his exploitative economic management of the Japanese puppet state of Manchukuo in China in the 1930s, imprisonment as a suspected war criminal following World War II, and provocation of the massive Anpo protests as prime minister, retrospectively receiving the nickname "Monster of the Shōwa era" (昭和の妖怪; Shōwa no yōkai). Kishi was the founder of the Satō–Kishi–Abe dynasty in Japanese politics, with his younger brother Eisaku Satō and his grandson Shinzo Abe both later serving as prime ministers of Japan.

Born in Yamaguchi Prefecture, Kishi graduated from Tokyo Imperial University in 1920. He rose through the ranks at the Ministry of Commerce and Industry, and during the 1930s led the industrial development of Manchukuo, where he exploited Chinese slave labor. Kishi served in the wartime cabinet of Hideki Tōjō as minister of commerce and industry from 1941 to 1943 and vice minister of munitions from 1943 to 1944. At the end of the war in 1945, Kishi was imprisoned as a suspected Class A war criminal, but U.S. occupation authorities did not charge, try, or convict him, and released him in 1948 during the Reverse Course. At the end of the occupation in 1952, Kishi was de-purged, enabling his election to the National Diet in 1953. With overt and covert U.S. support, he consolidated Japanese conservatives against perceived threats from the Japan Socialist Party, and in 1955 was instrumental in forming the Liberal Democratic Party (LDP). Kishi was thus key in establishing the "1955 System" under which the LDP remains Japan's dominant party.

Kiichi Miyazawa (宮澤 喜一, Miyazawa Kiichi; 8 October 1919 – 28 June 2007) was a Japanese politician who served as prime minister of Japan from 1991 to 1993.

Born in Tokyo, Miyazawa graduated from Tokyo Imperial University with a law degree, and in 1942 joined the Ministry of Finance. He was first elected to the National Diet in 1953 and held a number of prominent posts, including international trade and industry minister under Eisaku Sato, foreign minister under Takeo Miki, director of the Economic Planning Agency under Takeo Fukuda, chief cabinet secretary under Yasuhiro Nakasone, and finance minister under Noboru Takeshita. Miyazawa became prime minister in 1991, but was forced to resign after the 1993 election after a failure to pass political reforms caused his Liberal Democratic Party to face its first defeat in a national election since its formation in 1955. Miyazawa later returned as finance minister from 1999 to 2001 in the cabinets of Keizō Obuchi and Yoshirō Mori.