Kiyoshi Ōkubo was a Japanese serial killer. Between March 31, 1971, and May 10, 1971, he raped and murdered eight girls and women. He used a pen name, Tanigawa Ivan (谷川伊凡).
- Occupation
- poet, serial killer
- Citizenship
- Japan, Empire of Japan
- Born
- January 17, 1935
- Died
- January 23, 1976, January 22, 1976
