Jirō Sakagami (坂上二郎) (16 April 1934 – 10 March 2011) was a Japanese comedian, actor, and singer.
Sakagami was born in Kagoshima Prefecture but spent most of his childhood in Manchukuo. Winning an NHK song contest at age 19, he headed to Tokyo to try to make a name in the entertainment business, eventually training as a comedian at the Asakusa strip clubs. It was there that he met Kin'ichi Hagimoto and in 1966, the two formed the owarai duo Konto 55-gō. Konto 55-gō became nationally famous, starring in several top-rated shows on television. Sakagami continued to release songs and branched out into acting, appearing in television dramas as well as in films such as Nagisa Ōshima's Taboo.