List of 100 Grand International number-one songs of 2021

The 100 Grand International is a chart that ranks the best-performing international songs in Valstrath. Its data, published by The Grand magazine and compiled by Tiescon SoundScan, is based collectively on each song's weekly physical and digital sales, as well as the amount of airplay received on Valstrathian radio stations and streaming on online digital music outlets.
In 2021, sixteen singles reached number one on the 100 Grand; a fifteenth single, "Set Me on Fire" by Estelle, began its run in December 2020. In total, eighteen acts topped the chart as either lead or featured artists, with thirteen —Dua Lipa, SZA, Olivia Rodrigo, Cardi B, Silk Sonic, Anderson .Paak, Masked Wolf, Genesis Owusu, Kirin J. Callinan, King Gizzard & The Lizard Wizard, Jack Harlow, Celeste and Amber Mark.—achieving their first 100 Grand number-one single.
The longest running number one song of the year is "Rumors" by Lizzo featuring Cardi B, which led the charts for a total of ten weeks, despite that, "Montero (Call Me By Your Name)" was the song of the year.
Lil Nas X, Dua Lipa, Cardi B and Olivia Rodrigo are the only acts that reached multiple number one singles this year, with three for Lil Nas X, and two for the other artists.
==Chart History==
The bolded song was elected song of the year.
Issue Date 	Song 	Artist
January 2 	"Set Me on Fire" 	Estelle
January 9 	"Levitating" 	Dua Lipa ft. DaBaby
January 16 	"Levitating" 	Dua Lipa ft. DaBaby
January 23 	"Levitating" 	Dua Lipa ft. DaBaby
January 30 	"Levitating" 	Dua Lipa ft. DaBaby
February 6 	"Good Days" 	SZA
February 13 	"Prisoner" 	Miley Cyrus ft. Dua Lipa
February 20 	"Prisoner" 	Miley Cyrus ft. Dua Lipa
February 27 	"Prisoner" 	Miley Cyrus ft. Dua Lipa
March 6 	"Drivers License" 	Olivia Rodrigo
March 13 	"No Body, No Crime" 	Taylor Swift ft. HAIM
March 20 	"No Body, No Crime" 	Taylor Swift ft. HAIM
March 27 	"Up" 	Cardi B
April 3 	"Montero (Call Me by Your Name)"	Lil Nas X
April 10 	"Montero (Call Me by Your Name)"	Lil Nas X
April 17 	"Montero (Call Me by Your Name)"	Lil Nas X
April 24 	"Montero (Call Me by Your Name)"	Lil Nas X
May 1 	"Montero (Call Me by Your Name)"	Lil Nas X
May 8 	"Leave the Door Open" 	Silk Sonic (Bruno Mars & Anderson .Paak)
May 15 	"Astronaut in the Ocean" 	Masked Wolf
May 22 	"Good 4 U" 	Olivia Rodrigo
May 29 	"Good 4 U" 	Olivia Rodrigo
June 5 	"Good 4 U" 	Olivia Rodrigo
June 12 	"Good 4 U" 	Olivia Rodrigo
June 19 	"Good 4 U" 	Olivia Rodrigo
June 26 	"Good 4 U" 	Olivia Rodrigo
July 3 	"Good 4 U" 	Olivia Rodrigo
July 10 	"Drown" 	Genesis Owusu ft. Kirin J. Callinan
July 17 	"O.N.E." 	King Gizzard & The Lizard Wizard
July 24 	"O.N.E." 	King Gizzard & The Lizard Wizard
July 31 	"Industry Baby" 	Lil Nas X ft. Jack Harlow
August 7 	"Industry Baby" 	Lil Nas X ft. Jack Harlow
August 14 	"Industry Baby" 	Lil Nas X ft. Jack Harlow
August 21 	"Rumors" 	Lizzo ft. Cardi B
August 28 	"Rumors" 	Lizzo ft. Cardi B
September 4 	"Rumors" 	Lizzo ft. Cardi B
September 11	"Rumors" 	Lizzo ft. Cardi B
September 18	"Rumors" 	Lizzo ft. Cardi B
September 25	"Rumors" 	Lizzo ft. Cardi B
October 2 	"Rumors" 	Lizzo ft. Cardi B
October 9 	"Rumors" 	Lizzo ft. Cardi B
October 16 	"Rumors" 	Lizzo ft. Cardi B
October 23 	"Rumors" 	Lizzo ft. Cardi B
October 30 	"Stop This Flame" 	Celeste
November 6 	"Stop This Flame" 	Celeste
November 13 	"Stop This Flame" 	Celeste
November 20 	"Stop This Flame" 	Celeste
November 27 	"Stop This Flame" 	Celeste
December 4 	"Stop This Flame" 	Celeste
December 11 	"Foreign Things" 	Amber Mark
December 18 	"Foreign Things" 	Amber Mark
December 25 	"That's What I Want" 	Lil Nas X
==Extra Info==
* Dua Lipa's Levitating became her first number one single after scoring three number two singles in the same album: "Don't Start Now", "Physical" and "Hallucinate".
*"Montero (Call Me by Your Name) by Lil Nas X debuted at number one and stayed in the top for five weeks, the song was also elected the song of the year, plus, "Industry Baby" and "That's What I Want" also topped the charts in the same year.
*Cardi B scored her first two number one singles with "Up" and "Rumors".
*Silk Sonic, the collaboration project of Bruno Mars and Anderson .Paak, got their debut single "Leave the Door Open" to lead the charts for one week.
*With "Drivers License" and "Good 4 U", Olivia Rodrigo scored her first number one songs in the chart.
*Genesis Owusu became the first Ghanian artist to top the charts with "Drown".
*Australian Psychedelic Rock band King Gizzard & The Lizard Wizard scored their first number one single with "O.N.E."
*Lizzo's "Rumors" debuted at number one and stayed for ten weeks at the top of the charts.
== Songs of the Year ==
# 	Song 	Artist 	Peak and Duration
1 	"Montero (Call Me By Your Name)"	Lil Nas X 	#1 for 5 weeks
2 	"Rumors" 	Lizzo ft. Cardi B 	#1 for 10 weeks
3 	"Industry Baby" 	Lil Nas X ft. Jack Harlow 	#1 for 3 weeks
4 	"Stop This Flame" 	Celeste 	#1 for 6 weeks
5 	"Good 4 U" 	Olivia Rodrigo 	#1 for 7 weeks
6 	"Levitating" 	Dua Lipa ft. DaBaby 	#1 for 4 weeks
7 	"Purge the Poison" 	Marina 	#2 for 7 weeks
8 	"Leave the Door Open" 	Silk Sonic (Bruno mars & Anderson .Paak)	#1 for 1 week
9 	"Prisoner" 	Miley Cyrus ft. Dua Lipa 	#1 for 3 weeks
10	"O.N.E." 	King Gizzard & The Lizard Wizard 	#1 for 2 weeks