The highest-selling singles in Japan are ranked in the Oricon Singles Chart, which in 1984 was published in what was then called Oricon Weekly magazine. The data are compiled by Oricon based on each singles' physical sales. This list includes the singles that reached the number one place on that chart in 1984.
Oricon Weekly Singles Chart
Issue dateSongArtist(s)Ref.January 2""WarabeJanuary 9January 16January 23January 30February 6February 13""Seiko MatsudaFebruary 20February 27March 5March 12""Masahiko KondōMarch 19""Anzen ChitaiMarch 26April 2""Kyōko KoizumiApril 9""ShibugakitaiApril 16April 23"Southern Wind"Akina NakamoriApril 30May 7May 14""The CheckersMay 21""Seiko MatsudaMay 28June 4""Toshihiko TaharaJune 11June 18""Masahiko KondōJune 25July 2""Kyōko KoizumiJuly 9July 16""Asami KobayashiJuly 23July 30August 6"Jukkai (1984)"Akina NakamoriAugust 13""Seiko MatsudaAugust 20""Toshihiko TaharaAugust 27"Jukkai (1984)"Akina NakamoriSeptember 3""The CheckersSeptember 10September 17September 24"Eien ni Himitsu sa" (永遠に秘密さ)Masahiko KondōOctober 1""Kyōko KoizumiOctober 8October 15October 22""Tomoyo HaradaOctober 29""The AlfeeNovember 5""Hiroko YakushimaruNovember 12""Seiko MatsudaNovember 19November 26"Kazari ja Nai no yo Namida wa"Akina NakamoriDecember 3""The CheckersDecember 10December 17December 24December 31""Kyōko Koizumi
See also 1984 in Japanese music
References Oricon No.1 Hits 500. Clubhouse. 1998. ISBN 9784906496129. vol 1 (1968~1985).