Tharcisse Renzaho (born 17 July 1944) is a Rwandan soldier, former politician and war criminal.

Renzaho was born in the Gaseta sector of the Kigarama commune, in the Rwandan prefecture of Kibungo.

He became governor of the prefecture of Kigali-ville, and president of the Civil Defence Committee for Kigali.

According to the prosecutor for the International Criminal Tribunal for Rwanda (ICTR), Renzaho is alleged to have contributed to the genocide in numerous ways between 7 April and July 1994, including exercising his authority to set up roadblocks for the interception and murder of Tutsis, dismissing councillors who objected to the genocide, personally ordering the detainment and murder of Tutsis, equipping genocidaires with Kalashnikov rifles, and ordering the murder of the journalist André Kameya.

Following the collapse of the interim government and the victory of the RPF, Renzaho fled to Zaire.