Taku Yamasaki is a Japanese politician who served in the House of Representatives from 1972 to 2003 and from 2005 to 2009. He directed the Director General of the Japan Defense Agency for two months in 1989, and served as Minister of Construction from 1991 to 1992. He was a prominent faction leader in the Liberal Democratic Party (LDP) during the late 1990s and early 2000s, and served as its Secretary-General and Vice President under Prime Minister Jun'ichirō Koizumi.

The Minister of Defense , or Bōei-shō (防衛相), is a member of the Japanese cabinet and is the leader of the Japanese Ministry of Defense, the executive department of the Japanese Armed Forces. The minister of defense’s position of command and authority over the military is second only to that of the Prime Minister of Japan, who is the commander-in-chief.