1979 in Japan - Incumbents

Incumbents

• Emperor: Hirohito (Emperor Shōwa)
• Prime Minister: Masayoshi Ōhira (L–Kagawa, 2nd term from November 9)
• Chief Cabinet Secretary: Rokusuke Tanaka (L–Fukuoka) until November 9, Masayoshi Itō (L–Fukushima)
• Chief Justice of the Supreme Court: Masao Okahara until March 31, Takaaki Hattori from April 2
• President of the House of Representatives: Shigeru Hori (L–Saga) until February 1, Hirokichi Nadao (L–Hiroshima) until September 7 and again from October 30
• President of the House of Councillors: Ken Yasui (L–Tokyo)
• Diet sessions: 87th (regular session opened in December 1978, to May 14), 88th (extraordinary, August 30 to September 7), 89th (special, October 30 to November 16), 90th (extraordinary, November 26 to December 11), 91st (regular, December 21 to 1980, May 19)