Events in the year 1974 in Japan. It corresponds to Shōwa 49 (昭和49年) in the Japanese calendar.

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← 1973 1972 1971 1974 in Japan → 1975 1976 1977
Decades:	1950s 1960s 1970s 1980s 1990s
See also:	Other events of 1974 History of Japan  • Timeline  • Years

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• Emperor: Hirohito^[1]
• Prime minister: Kakuei Tanaka (Liberal Democratic) until December 9, Takeo Miki (Liberal Democratic)
• Chief Cabinet Secretary: Susumu Nikaido until November 11, Noboru Takeshita until December 9, 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: 72nd (regular session opened on December 1, 1973, to June 3), 73rd (extraordinary, July 24 to July 31), 74th (extraordinary, December 9 to December 25), 75th (regular, December 27 to July 4, 1975)

• May 9 - A magnitude 6.9 earthquake strikes the Izu Peninsula, killing 30 and injuring 102.
• May 27 – Keyence was founded.^{[citation needed]}
• June 20 – Daito Industry, as predecessor of Daito Trust Construction founded in Chikusa-ku, Nagoya.^{[page needed]}
• July 7 to 8 – According to Fire and Disaster Management Agency official confirmed report, a torrential heavy massibie rain, following debris flow and devee collapse hit in eastern Shizuoka Prefecture, 50 persons were human fatalities.^[2]
• August 30 - A powerful bomb blast occurred in the Marunouchi business area, Tokyo, resulting in 8 confirmed deaths and 376 injuries.^[3]
• November 9 - A LPG carrier, Juyo Maru 10 collision with Liberian cargo ship Pacific Ares, following caught fire in Tokyo Bay, according to Marine Safety Agency of Japan confirmed official, 33 persons lost their lives.^[4]
• December 18 – According to Japanese government official confirmed report, A petroleum tank broken in Mizushima refinery, Kurashiki, Okayama Prefecture, in affective 80,000 litter crude oil spill and contamination tide was widely Seto Inland Sea area, these place recoveries spend for more two years.^[5]

• January 5 - Yutaka Yoshie, professional wrestler (d. 2024)
• January 29
  • Taketo Aoki, baseball player
  • Kōji Wada, rock singer (d. 2016)
• February 7
  • Jun Seba, aka Nujabes, hip-hop producer
  • Yō Yoshida, actress
• February 27 - Hiroyasu Shimizu, speed skater
• March 12 – Hekiru Shiina, voice actress and singer
• March 28 - Daisuke Kishio, voice actor
• June 13 - Takahiro Sakurai, voice actor
• June 17 - Mikiyo Ōno, model, actress and J-pop singer
• July 2 - Kiyohiko Shibukawa, fashion model and actor
• August 4 – Wasabi Mizuta, voice actress
• September 29 – Hirofmi Ono, businessman (a CEO of live storming entertainment)^{[citation needed]}
• October 8 - Koji Murofushi, hammer thrower^[6]
• November 8 - Masashi Kishimoto, manga author^[7]
• December 4 - Tadahito Iguchi, baseball player
• December 27 - Fumiko Orikasa, voice actress and singer

• March 1 – Kōtarō Tanaka, jurist and law professor (b. 1890)
• April 12 – Kimiko Tsumura, Noh traditional performer (b. 1902)^{[citation needed]}
• August 11 – Fusako Kitashirakawa, seventh daughter of Emperor Meiji (b. 1890)
• December 24 – Sentarō Ōmori, admiral (b. 1892)

• 1974 in Japanese television
• List of Japanese films of 1974