Toshiharu Furukawa (古川 俊治, Furukawa Toshiharu, born January 14, 1963) is a Japanese medical doctor, attorney, and politician of the Liberal Democratic Party.

Furukawa attended Keio University, receiving his M.D. in 1987, followed by a Ph.D. in medical science in 1994 and LL.B. in 1996. He attended the Legal Research Training Institute from 1997 to 1999 to be qualified as an attorney, and obtained his MBA at Saïd Business School in 2005. Furukawa served as assistant professor/professor of medicine at Keio from 1999, and as a part-time lecturer in medicine at Hirosaki University from 2001 to 2012.^[1] He is also founder and Chief Executive Officer of GBS Laboratory.

Furukawa was elected to the House of Councillors in the 2007 election and re-elected in the 2013 election. He represents Saitama Prefecture for the Liberal Democratic Party and Party for Japanese Kokoro. He previously served as Chairman of the Committee on Financial Affairs, and is currently a member of the Committee on Judicial Affairs, Committee on Audit, and Commission on the Constitution.^[2]

He serves as counsel to TMI Associates, a law firm in Tokyo.^[1]