List of Hot 100 number-one singles of 2020 (Japan)
The following is a list of number-one singles on the Billboard Japan Hot 100 chart in 2020.
Chart history

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| Issue date | Song | Artist(s) | Ref. |
|---|---|---|---|
| January 6 | "Pretender" | Official Hige Dandism | [1] |
| January 13 | [2] | ||
| January 20 | [3] | ||
| January 27 | "Sōyūtoko Aru yo ne?" | SKE48 | [4] |
| February 3 | "Imitation Rain" | SixTones | [5] |
| February 10 | "Mubō na Yume wa Sameru Koto ga Nai" | STU48 | [6] |
| February 17 | "I Love..." | Official Hige Dandism | [7] |
| February 24 | [8] | ||
| March 2 | "Sonna Koto Nai yo" | Hinatazaka46 | [9] |
| March 9 | "I Am" | Hey! Say! JUMP | [10] |
| March 16 | "Infinity" | JO1 | [11] |
| March 23 | "I Love..." | Official Hige Dandism | [12] |
| March 30 | "Shitsuren, Arigatō" | AKB48 | [13] |
| April 6 | "Shiawase no Hogoshoku" | Nogizaka46 | [14] |
| April 13 | "Fallin' Flower" | Seventeen | [15] |
| April 20 | "I Love..." | Official Hige Dandism | [16] |
| April 27 | [17] | ||
| May 4 | "3-2" | HKT48 | [18] |
| May 11 | "I Love..." | Official Hige Dandism | [19] |
| May 18 | [20] | ||
| May 25 | "Kōsui" | Eito | [21] |
| June 1 | "Yoru ni Kakeru" | Yoasobi | [22] |
| June 8 | [23] | ||
| June 15 | [24] | ||
| June 22 | "Mazy Night" | King & Prince | [25] |
| June 29 | "Kanzai Boya" | KinKi Kids | [26] |
| July 6 | "Shōko" | Johnny's West | [27] |
| July 13 | "Last Mermaid..." | Hey! Say! JUMP | [28] |
| July 20 | "Fanfare" | Twice | [29] |
| July 27 | "Yoru ni Kakeru" | Yoasobi | [30] |
| August 3 | "Navigator" | SixTones | [31] |
| August 10 | "Kite" | Arashi | [32] |
| August 17 | "Run" | Sexy Zone | [33] |
| August 24 | "Smile" | Twenty Twenty | [34] |
| August 31 | "Re:Live" | Kanjani Eight | [35] |
| September 7 | "Oh-Eh-Oh" | JO1 | [36] |
| September 14 | "Omoidaseru Koi wo Shiyō" | STU48 | [37] |
| September 21 | "Yoru ni Kakeru" | Yoasobi | [38] |
| September 28 | "Endless Summer" | Kis-My-Ft2 | [39] |
| October 5 | "Yoru ni Kakeru" | Yoasobi | [40] |
| October 12 | "Your Song" | Hey! Say! JUMP | [41] |
| October 19 | "Kissin' My Lips" | Snow Man | [42] |
| October 26 | "Homura" | LiSA | [43] |
| November 2 | [44] | ||
| November 9 | [45] | ||
| November 16 | [46] | ||
| November 23 | "New Era" | SixTones | [47] |
| November 30 | "Homura" | LiSA | [48] |
| December 7 | [49] | ||
| December 14 | "Step and a Step" | NiziU | [50] |
| December 21 | "Nobody's Fault" | Sakurazaka46 | [51] |
| December 28 | "I Promise" | King & Prince | [52] |
References
- ^ "Billboard Japan Hot 100 2020/1/6". Billboard Japan (in Japanese). Retrieved January 8, 2020.
- ^ "Billboard Japan Hot 100 2020/1/13". Billboard Japan (in Japanese). Retrieved January 8, 2020.
- ^ "Billboard Japan Hot 100 2020/1/20". Billboard Japan (in Japanese). Retrieved January 16, 2020.
- ^ "Billboard Japan Hot 100 2020/1/27". Billboard Japan (in Japanese). Retrieved January 22, 2020.
- ^ "Billboard Japan Hot 100 2020/2/3". Billboard Japan (in Japanese). Retrieved January 29, 2020.
- ^ "Billboard Japan Hot 100 2020/2/10". Billboard Japan (in Japanese). Retrieved February 5, 2020.
- ^ "Billboard Japan Hot 100 2020/2/17". Billboard Japan (in Japanese). Retrieved February 13, 2020.
- ^ "Billboard Japan Hot 100 2020/2/24". Billboard Japan (in Japanese). Retrieved February 20, 2020.
- ^ "Billboard Japan Hot 100 2020/3/2". Billboard Japan (in Japanese). Retrieved February 26, 2020.
- ^ "Billboard Japan Hot 100 2020/3/9". Billboard Japan (in Japanese). Retrieved March 9, 2020.
- ^ "Billboard Japan Hot 100 2020/3/16". Billboard Japan (in Japanese). Retrieved March 11, 2020.
- ^ "Billboard Japan Hot 100 2020/3/23". Billboard Japan (in Japanese). Retrieved March 20, 2020.
- ^ "Billboard Japan Hot 100 2020/3/30". Billboard Japan (in Japanese). Retrieved March 26, 2020.
- ^ "Billboard Japan Hot 100 2020/4/6". Billboard Japan (in Japanese). Retrieved April 1, 2020.
- ^ "Billboard Japan Hot 100 2020/4/13". Billboard Japan (in Japanese). Retrieved April 8, 2020.
- ^ "Billboard Japan Hot 100 2020/4/20". Billboard Japan (in Japanese). Retrieved April 15, 2020.
- ^ "Billboard Japan Hot 100 2020/4/27". Billboard Japan (in Japanese). Retrieved April 22, 2020.
- ^ "Billboard Japan Hot 100 2020/5/4". Billboard Japan (in Japanese). Retrieved April 29, 2020.
- ^ "Billboard Japan Hot 100 2020/5/11". Billboard Japan (in Japanese). Retrieved May 6, 2020.
- ^ "Billboard Japan Hot 100 2020/5/18". Billboard Japan (in Japanese). Retrieved May 13, 2020.
- ^ "Billboard Japan Hot 100 2020/5/25". Billboard Japan (in Japanese). Retrieved May 27, 2020.
- ^ "Billboard Japan Hot 100 2020/6/1". Billboard Japan (in Japanese). Retrieved May 27, 2020.
- ^ "Billboard Japan Hot 100 2020/6/8". Billboard Japan (in Japanese). Retrieved June 3, 2020.
- ^ "Billboard Japan Hot 100 2020/6/15". Billboard Japan (in Japanese). Retrieved June 10, 2020.
- ^ "Billboard Japan Hot 100 2020/6/22". Billboard Japan (in Japanese). Retrieved June 17, 2020.
- ^ "Billboard Japan Hot 100 2020/6/29". Billboard Japan (in Japanese). Retrieved June 24, 2020.
- ^ "Billboard Japan Hot 100 2020/7/6". Billboard Japan (in Japanese). Retrieved July 2, 2020.
- ^ "Billboard Japan Hot 100 2020/7/13". Billboard Japan (in Japanese). Retrieved July 8, 2020.
- ^ "Billboard Japan Hot 100 2020/7/20". Billboard Japan (in Japanese). Retrieved July 15, 2020.
- ^ "Billboard Japan Hot 100 2020/7/27". Billboard Japan (in Japanese). Retrieved July 28, 2020.
- ^ "Billboard Japan Hot 100 2020/8/3". Billboard Japan (in Japanese). Retrieved July 29, 2020.
- ^ "Billboard Japan Hot 100 2020/8/10". Billboard Japan (in Japanese). Retrieved August 5, 2020.
- ^ "Billboard Japan Hot 100 2020/8/17". Billboard Japan (in Japanese). Retrieved August 12, 2020.
- ^ "Billboard Japan Hot 100 2020/8/24". Billboard Japan (in Japanese). Retrieved August 21, 2020.
- ^ "Billboard Japan Hot 100 2020/8/31". Billboard Japan (in Japanese). Retrieved August 27, 2020.
- ^ "Billboard Japan Hot 100 2020/9/7". Billboard Japan (in Japanese). Retrieved September 2, 2020.
- ^ "Billboard Japan Hot 100 2020/9/14". Billboard Japan (in Japanese). Retrieved September 9, 2020.
- ^ "Billboard Japan Hot 100 2020/9/21". Billboard Japan (in Japanese). Retrieved September 16, 2020.
- ^ "Billboard Japan Hot 100 2020/9/28". Billboard Japan (in Japanese). Retrieved September 23, 2020.
- ^ "Billboard Japan Hot 100 2020/10/5". Billboard Japan (in Japanese). Retrieved October 1, 2020.
- ^ "Billboard Japan Hot 100 2020/10/12". Billboard Japan (in Japanese). Retrieved October 7, 2020.
- ^ "Billboard Japan Hot 100 2020/10/19". Billboard Japan (in Japanese). Retrieved October 14, 2020.
- ^ "Billboard Japan Hot 100 2020/10/26". Billboard Japan (in Japanese). Archived from the original on October 21, 2020. Retrieved October 21, 2020.
- ^ "Billboard Japan Hot 100 2020/11/2". Billboard Japan (in Japanese). Retrieved October 28, 2020.
- ^ "Billboard Japan Hot 100 2020/11/9". Billboard Japan (in Japanese). Retrieved November 5, 2020.
- ^ "Billboard Japan Hot 100 2020/11/16". Billboard Japan (in Japanese). Retrieved November 11, 2020.
- ^ "Billboard Japan Hot 100 2020/11/23". Billboard Japan (in Japanese). Retrieved November 18, 2020.
- ^ "Billboard Japan Hot 100 2020/11/30". Billboard Japan (in Japanese). Retrieved November 25, 2020.
- ^ "Billboard Japan Hot 100 2020/12/7". Billboard Japan (in Japanese). Retrieved December 2, 2020.
- ^ "Billboard Japan Hot 100 2020/12/14". Billboard Japan (in Japanese). Retrieved December 10, 2020.
- ^ "Billboard Japan Hot 100 2020/12/21". Billboard Japan (in Japanese). Retrieved December 17, 2020.
- ^ "Billboard Japan Hot 100 2020/12/28". Billboard Japan (in Japanese). Retrieved December 23, 2020.