List of Gaon Digital Chart number ones of 2020

The Gaon Digital Chart is a chart that ranks the best-performing singles in South Korea. Managed by the domestic Ministry of Culture, Sports and Tourism (MCST), its data is compiled by the Korea Music Content Industry Association and published by the Gaon Music Chart. The ranking is based collectively on each single's download sales, stream count, and background music use. In mid-2008, the Recording Industry Association of Korea ceased publishing music sales data. The MCST established a process to collect music sales in 2009, and began publishing its data with the introduction of the Gaon Music Chart the following February. With the creation of the Gaon Digital Chart, digital data for individual songs was provided in the country for the first time. Gaon provides weekly (listed from Sunday to Saturday), monthly and yearly charts. Below is a list of singles that topped the weekly and monthly charts.

Weekly charts

Zico's "Any Song" was the best performing song of February.
"Eight" by IU featuring Suga was the best performing single of both May and June.
Blackpink's "How You Like That" was the best performing song of July.
BTS' "Dynamite" was the top song from September to November. It also became the first song to reach 11 weeks at number one as well to reach 3 months at number one
Key
† Indicates best-performing single of 2020
Week ending date Song Artist(s) Ref.
January 4 "Meteor" Changmo
January 11
January 18 "Any Song" (아무노래) † Zico
January 25
February 1
February 8
February 15
February 22 "Give You My Heart"
(마음을 드려요) 		IU
February 29 "On" BTS
March 7 "Any Song" (아무노래) † Zico
March 14
March 21 "Start Over" (시작) Gaho
March 28
April 4 "Bloom" (처음처럼) MC the Max
April 11 "Start Over" (시작) Gaho
April 18 "Aloha" (아로하) Jo Jung-suk
April 25
May 2
May 9 "Eight" (에잇) IU featuring Suga
May 16
May 23
May 30 "I Knew I Love"
(사랑하게 될 줄 알았어) 		Jeon Mi-do
June 6
June 13 "Eight" (에잇) IU featuring Suga
June 20 "Downtown Baby" Bloo
June 27
July 4 "How You Like That" Blackpink
July 11
July 18
July 25 "Beach Again"
(다시 여기 바닷가) 		SSAK3
August 1
August 8
August 15
August 22
August 29 "Dynamite" BTS
September 5
September 12
September 19
September 26
October 3
October 10
October 17 "Don't Touch Me" Refund Sisters
October 24
October 31 "Dynamite" BTS
November 7
November 14
November 21
November 28 "VVS" Miranni, Munchman, Khundi Panda, Mushvenom
featuring Justhis
December 5
December 12
December 19
December 26

Monthly charts

Month Song Artist(s) Ref.
January "Meteor" Changmo
February "Any Song" (아무노래) Zico
March "Start Over" (시작) Gaho
April "Aloha" (아로하) Jo Jung-suk
May "Eight" (에잇) IU featuring Suga
June
July "How You Like That" Blackpink
August "Beach Again"
(다시 여기 바닷가) 		SSAK3
September "Dynamite" BTS
October
November
December "VVS" Miranni, Munchman, Khundi Panda, Mushvenom
featuring Justhis

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