1975 in Japan

Incumbents

• Emperor: Hirohito
• Prime Minister: Takeo Miki
• Chief Cabinet Secretary: Ichitaro Ide
• Chief Justice of the Supreme Court: Tomokazu Murakami
• President of the House of Representatives: Shigesaburō Maeo
• President of the House of Councillors: Kenzō Kōno
• Diet sessions: 75th, 76th, 77th

  Events

• January 1 - A hotel bus plunges into Lake Aoki in Nagano Prefecture, killing 24.
• March 10 - Sanyo Shinkansen officially open between Okayama Station to Hakata Station of Fukuoka.
• July 20 - opening of Expo '75 in Okinawa.
• November 2–8 - 1975 Japan Open Tennis Championships held in Tokyo.
• November 3 - Miss International 1975 held at Expo Portside Theater, Motobu, Okinawa.
• November 26 to December 3 - Japanese National Railways mandatory implementation an eight-day-long illegal "strike for the right to strike".
• December 12 - In Osaka International Airport of Itami, where takeoff and landing of civilian aircraft before 7 o'clock and after 21 o'clock was forbidden, that caused by noise complaints from residents triggered.
• December 31 - 17th Japan Record Awards held in Tokyo.

  Films

• Dersu Uzala, directed by Akira Kurosawa
• Gorenger the Movie

• Graveyard of Honor, directed by Kinji Fukasaku
• Hans Christian Andersen's The Little Mermaid, directed by Tomoharu Katsumata
• Kamen Rider Amazon
• Kamen Rider Stronger
• Karayuki-san, the Making of a Prostitute, directed by Shohei Imamura

• The Return of the Sister Street Fighter, directed by Kazuhiko Yamaguchi
• Terror of Mechagodzilla, directed by Ishirō Honda
• Tokyo Emmanuelle
• Tora-san's Rise and Fall, directed by Yoji Yamada
• Tora-san, the Intellectual, directed by Yoji Yamada
• A Woman Called Sada Abe, directed by Noboru Tanaka

  Births

• January 1 - Eiichiro Oda, illustrator and author
• January 6 - Yukana, voice actress and singer
• January 8 - Reiko Chiba, actress
• January 28 - Hiroshi Kamiya, voice actor
• January 30 - Yumi Yoshimura, singer
• February 6 - Tomoko Kawase, singer
• February 17 - Michiko Kichise, actress
• February 10 - Hiroki Kuroda, baseball pitcher
• April 3
• * Koji Uehara, baseball pitcher
• * Yoshinobu Takahashi, professional baseball player
• April 27 - Kazuyoshi Funaki, ski jumper
• May 19 - Mitsutoshi Shimabukuro, manga artist
• June 22 - Yuka Itaya, actress
• July 5 - Ai Sugiyama, tennis player
• July 22 - Kenshin Kawakami, baseball pitcher
• August 1 - Ryoko Yonekura, actress
• August 11 - Kishō Taniyama, voice actor
• August 24 - Hayato Sakurai, martial artist
• August 28 - Yūko Gotō, voice actress
• September 6 - Ryoko Tani, judoka
• November 11 - Daisuke Ohata, rugby union player
• November 16 - Yuki Uchida, actress
• December 12 - Kuwashima Houko, voice actress
• December 15 - Haruna Ikezawa, actress and voice actress
• December 16 - Masaki Sumitani, television performer
• December 30 - Yoma Komatsu, singer

  Deaths

• February 11 - Hideo Shinojima, footballer
• May 30 - Tatsuo Shimabuku, martial artist and founder of Isshin-ryu karate
• June 3 - Eisaku Satō, Prime Minister of Japan, recipient of the Nobel Peace Prize
• November 20 - Tokushichi Mishima, inventor and engineer