The following is a list of Oricon number-one singles of 1999.
Oricon Weekly Singles Chart Issue dateSongArtist(s)Ref.January 4"Toku made"Kōshi InabaJanuary 11"I Have Never Seen"Namie AmuroJanuary 18"Last Chance "Something ElseJanuary 25"Hikari no sasu ho e"Mr. ChildrenFebruary 1"Asa ga mata kuru"Dreams Come TrueFebruary 8"Sono Speed de"The Brilliant GreenFebruary 15"Winter, Again"GlayFebruary 22March 1"Movin' On Without You"Hikaru UtadaMarch 8"Yamenai de, Pure"KinKi KidsMarch 15"Dango 3 Kyodai"Kentarō Hayami & Ayumi ShigemoriMarch 22March 29April 5"My First Love"Takako UeharaApril 12"Believe Your Smile"V6April 19"Mind Games"ZardApril 26"Love (Destiny)"Ayumi HamasakiMay 3"Heaven's Drive"L'Arc-en-CielMay 10May 17"Grateful Days"Dragon AshMay 24"I'll Be"Mr. ChildrenMay 31"Survival"GlayJune 7"Flower"KinKi KidsJune 14"Pieces"L'Arc-en-CielJune 21"Giri giri chop"B'zJune 28"Energy Flow (Ura BTTB)"Ryūichi SakamotoJuly 5July 12July 19July 26"Be Together"Amy SuzukiAugust 2"Boys & Girls"Ayumi HamasakiAugust 9August 16August 23"A"Ayumi HamasakiAugust 30September 6"Koko dewa nai, dokoka e"GlaySeptember 13"A"Ayumi HamasakiSeptember 20"Love Machine"Morning MusumeSeptember 27October 4October 11"Our Days"Amy SuzukiOctober 18"Ame no Melody"KinKi KidsOctober 25November 1"Subete e"19November 8"Love Flies"L'Arc-en-CielNovember 15"A・ra・shi"ArashiNovember 22"Addicted to You"Hikaru UtadaNovember 29December 6"Chocotto Love"Pettite MoniDecember 13December 20"kanariya"Ayumi HamasakiDecember 27"Heaven"Masaharu Fukuyama
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