This is a list of number one singles on the Billboard Japan Hot 100 chart in 2009.
DateSongArtist January 5 "Stay with Me" Kumi Koda January 19 "Yume no Tsubomi" Remioromen January 26 "Velonica" Aqua Timez February 2 "Free" Mao Abe February 9 "Yakusoku" KinKi Kids February 16 "Wao!" Unicorn February 23 "One Drop" KAT-TUN March 2 "Milk" Aiko March 9 "Rule" Ayumi Hamasaki March 16 "Believe" Arashi March 23 "Rescue" KAT-TUN March 30 "Wild" Namie Amuro April 6 "One Room Disco" Perfume April 13 "It's All Love!" Kumi Koda and Misono April 20 "Niji" Kobukuro April 27 "Someday" Exile May 4 "Aitai" Yuzu May 11 "Koi no Abo" NEWS May 18 "Ashita ga Kuru Nara" Juju and Jay'ed May 25 "Love Forever" Miliyah Kato and Shota Shimizu June 1 "Keshin" Masaharu Fukuyama June 8 "Ashita no Kioku" Arashi June 15 "Again" Yui June 22 "Haruka" Greeeen June 29 "Spirit" V6 July 6 "Tanpopo" Yusuke July 13 "Everything" Arashi July 20 "Tanabata Matsuri" Tegomass July 27 "Stay" Kobukuro August 3 "Fireworks" Exile August 10 "Ayakashi" Koichi Domoto August 17 "Ichibu to Zenbu" B'z August 24 August 31 "Yume o Arigatō" Yuko Hara September 7 "Sotto Kyutto" SMAP September 14 "Niji" Yuzu September 21 "Sono Sake e" Dreams Come True featuring Fuzzy Control September 28 "Blame It on the Girls" Mika October 5 "Yell" Ikimono-gakari October 12 "Colors (Melody and Harmony)" Jejung and Yuchun October 19 "It's All Too Much" Yui October 26 "My Lonely Town" B'z November 2 "Boku wa Kimi ni Koi o Suru" Ken Hirai November 9 "Swan Song" Kinki Kids November 16 "Kyū Jō Show!!" Kanjani 8 November 23 "My Girl" Arashi November 30 "Loveless" Tomohisa Yamashita December 7 "Bandage" Lands December 14 "Nōdōteki Sanpunkan" Tokyo Jihen December 21 "Kimi ni Sayonara o" Keisuke Kuwata December 28 "Hatsukoi" Masaharu Fukuyama
See also Lists of Hot 100 number-one singles of 2009
References