Kozo Igarashi (??? ??, Igarashi Kozo, 15 March 1926 – May 7, 2013) was a Japanese politician from Asahikawa, Hokkaido.
He was a former mayor of Asahikawa City in Hokkaido from 1963 to 1974, member of the House of Representatives, construction minister in the Hosokawa Cabinet from 1993 to 1994, and chief Cabinet secretary in the government of Prime Minister Tomiichi Murayama from 1994 to 1995.
In 1975 and 1979, Igarashi ran for governor of Hokkaido as a united front candidate (JSP, JCP, Komeito), but lost both elections to incumbent Naohiro Dogakinai.