The following is a list of Oricon number-one singles of 2000.
Oricon Weekly Singles Chart Issue dateSongArtist(s)Ref.January 3"Next 100 Years"J FriendsJanuary 10January 17"Happiness"GlayJanuary 24"Kuchibue"Mr. ChildrenJanuary 31"Neo Universe/Finale"L'Arc-en-CielFebruary 7"Tsunami"Southern All StarsFebruary 14February 21"Kon'ya Tsuki no Mieru Oka ni"B'zFebruary 28"Tsunami"Southern All StarsMarch 6March 13March 20"Suki ni natte ku aishite ku"KinKi KidsMarch 27"Stay by my side"Mai KurakiApril 3April 10"Gravity"Luna SeaApril 17"SUNRISE Nippon / Horizon"ArashiApril 24"THANK YOU 4 EVERY DAY EVERY BODY"Amy SuzukiMay 1"Wait & See (Risk)"Hikaru UtadaMay 8"Sakura Zaka"Masaharu FukuyamaMay 15May 22May 29"Happy Summer Wedding"Morning MusumeJune 5"May"B'zJune 12"Ah, seishun no hibi"YuzuJune 19"Seasons"Ayumi HamasakiJune 26July 3"Natsu no ōsama"KinKi KidsJuly 10"For You"Hikaru UtadaJuly 17July 24"Juice"B'zJuly 31"Mermaid"GlayAugust 7"Seishun jidai 1.2.3!"PetitmoniAugust 14"Be alive"Yuki KoyanagiAugust 21"Not Found"Mr. ChildrenAugust 28"Shingo Mama no Oha Rock"Shingo MamaSeptember 4"Tomadoi"GlaySeptember 11"Lion Heart"SMAPSeptember 18"I Wish"Morning MusumeSeptember 25"Lion Heart"SMAPOctober 2"soudage"Porno GraffitiOctober 9"Surreal"Ayumi HamasakiOctober 16"Ring"B'zOctober 23"Hey!"Masaharu FukuyamaOctober 30"Tobenai tori"YuzuNovember 6"Everything"MISIANovember 13November 20November 27"Missing you"GlayDecember 4"Everything"MISIADecember 11"I Will Get There"J FriendsDecember 18"Saboten"Porno GraffitiDecember 25"M"Ayumi Hamasaki
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