Kiyoharu Ishiwata (石渡 清元, Ishiwata Kiyoharu; 9 December 1940 – January 20, 2014) was a Japanese politician. He was a member of the House of Councillors from 1989 to 2001. Ishiwata died of heart failure at the age of 73.
Source: “Kiyoharu Ishiwata”, English Wikipedia (CC BY-SA 4.0), excerpt
