Tenkoko Sonoda (?? ???, Sonoda Tenkoko, 23 January 1919 – 29 January 2015) was a Japanese politician born in Tokyo.
She was a member of the Japanese Diet from 1946–1952.
In 1950, she became the first woman in Japanese political history to have a baby while in office.Tenkoko Sonoda was the widow of Foreign Minister Sunao Sonoda.
She was the step-mother to Hiroyuki Sonoda.
She was a socialist at first, and belonged to the Japan Socialist Party (the Social Democratic Party Japan; SDPJ) and the Workers and Farmers Party (Maoism) in the Diet, but changed her opinion by herself to be conservative after her marriage to Sunao.She was a member of the representative committee of the openly revisionist lobby Nippon Kaigi, to which her son-in-law Hiroyuki is also affiliated.