Tsutomu Hata (羽田 孜, Hata Tsutomu; 24 August 1935 – 28 August 2017) was a Japanese politician who briefly served as prime minister of Japan in 1994.
Born in Tokyo, Hata graduated from Seijo University and was first elected to the National Diet in 1969. He rose to become a key member of the Liberal Democratic Party's Tanaka/Takeshita faction, and served as agriculture, forests, and fisheries minister in the 1980s and finance minister from 1991 to 1992. After Keizō Obuchi took over the faction, Hata formed the Japan Renewal Party in 1993, which joined in the anti-LDP coalition which formed Morihiro Hosokawa's government. Hata served as foreign minister, then replaced Hosokawa as prime minister when he resigned. However, the Japan Socialist Party soon left the coalition, causing it to collapse. Hata lost leadership of his party when it merged with the New Frontier Party, then formed his own Sun Party, which in turn merged with the Good Governance Party then Democratic Party in 1998. Hata became secretary-general of the party, and remained one of its senior advisors until his death.