| Kenzō Kōno | |
| Office: | President of the House of Councillors of Japan |
| Term Start: | 17 July 1971 |
| Term End: | 3 July 1977 |
| Predecessor: | Yūzō Shigemune |
| Successor: | Ken Yasui |
| Birth Date: | 14 May 1901 |
| Birth Place: | Odawara, Kanagawa Prefecture, Japan |
| Alma Mater: | Waseda University |
Kenzō Kōno (ja|河野 謙三, Kōno Kenzō, May 14, 1901 – October 16, 1983) was a Japanese politician who served as President of the House of Councillors (1971–1977) and President of the Japan Association of Athletics Federations (1965–1975).
Kōno was born on May 14, 1901. Belonging to a political dynasty, he was the younger brother of his predecessor, Ichirō Kōno and the uncle of Yōhei Kōno (Ichiro's son); Tarō Kōno is his great-nephew. He graduated from the Waseda University. In his youth he was a long-distance runner and won stages of the Hakone Ekiden in 1921 and 1922.
In his political career, he was the president of the House of Councillors from 17 July 1971 to 3 July 1977, was elected five times as a member of the House of Councillors for Kanagawa Prefecture between 1953 and 1983, and was a Member of the House of Representatives for Kanagawa's third district from 24 January 1949 to 28 August 1952.
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