List of 100 Grand International number-one songs of 2015

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.
During 2015, fourteen singles reached number one on the 100 Grand. In total, eighteen acts topped the chart as either lead or featured artists, with six—Mark Ronson, Fifth Harmony, Kid Ink, Demi Lovato, The Weeknd and Graveyard—achieving their first 100 Grand number-one single.
The longest running number one song of the year was "Uptown Funk" by Mark Ronson featuring Bruno Mars, that led the charts for a total of thriteen weeks, the song also topped the Year-End 100 Grand.
== Chart History ==
The bold song represents the song of the year.
Issue Date 	Song 	Artist
January 3 	"I Am Machine" 	Three Days Grace
January 10 	"I Am Machine" 	Three Days Grace
January 17 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
January 24 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
January 31 	"FourFiveSeconds" 	Rihanna, Kanye West & Paul McCartney
February 7 	"FourFiveSeconds" 	Rihanna, Kanye West & Paul McCartney
February 14 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
February 21 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
February 28 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
March 7 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
March 14 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
March 21 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
March 28 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
April 4 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
April 11 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
April 18 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
April 25 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars
May 2 	"Centuries" 	Fall Out Boy
May 9 	"Centuries" 	Fall Out Boy
May 16 	"Centuries" 	Fall Out Boy
May 23 	"Coming To You" 	The Offspring
May 30 	"Coming To You" 	The Offspring
June 6 	"Nobody Praying For Me" 	Seether
June 13 	"Nobody Praying For Me" 	Seether
June 20 	"Nobody Praying For Me" 	Seether
June 27 	"Nobody Praying For Me" 	Seether
July 4 	"Nobody Praying For Me" 	Seether
July 11 	"Nobody Praying For Me" 	Seether
July 18 	"Worth It" 	Fifth Harmony ft. Kid Ink
July 25 	"Worth It" 	Fifth Harmony ft. Kid Ink
August 1 	"Cool For The Summer" 	Demi Lovato
August 8 	"Can't Feel My Face" 	The Weeknd
August 15 	"Can't Feel My Face" 	The Weeknd
August 22 	"Can't Feel My Face" 	The Weeknd
August 29 	"Can't Feel My Face" 	The Weeknd
September 5 	"Can't Feel My Face" 	The Weeknd
September 12	"Can't Feel My Face" 	The Weeknd
September 19	"Can't Feel My Face" 	The Weeknd
September 26	"Can't Feel My Face" 	The Weeknd
October 3 	"Nearly Forgot My Broken Heart"	Chris Cornell
October 10 	"Nearly Forgot My Broken Heart"	Chris Cornell
October 17 	"The Misanthrope" 	Local H
October 24 	"The Misanthrope" 	Local H
October 31 	"Hello" 	Adele
November 7 	"Hello" 	Adele
November 14 	"Hello" 	Adele
November 21 	"Hello" 	Adele
November 28 	"Hello" 	Adele
December 5 	"Hello" 	Adele
December 12 	"Hello" 	Adele
December 19 	"Hello" 	Adele
December 26 	"Hello" 	Adele
==Extra Info==
* Taylor Swift scored her first and (so far) only number one on the charts with "Blank Space".
* "Uptown Funk" by Mark Ronson featuring Bruno Mars stayed at number one for 13 weeks and was the song of 2015.
* The Collaboration "FourFiveSeconds" scored to Kanye West and Paul McCartney their first number one since "Stronger" in 2008 and "Take It Away" in 1982 respecitvely.
* "Centuries" became Fall Out Boy's first number one song since "Thnks fr th mmrs" in 2007.
* "Nobody Praying For Me" became Seether's first number one song since "Fake It" in 2007.
* "Cool For The Summer" became Demi Lovato's first number one single on the charts.
* "Can't Feel My Face" spent eight weeks at the top of the charts and became The Weeknd's first number one single.
* "The Misanthrope" became Local H's first number one since "Bound For The Floor" in 1997.
=== Year End Top 10 ===
# 	Song 	Artist 	Peak And Duration
1 	"Uptown Funk" 	Mark Ronson ft. Bruno Mars 	#1 for 13 weeks
2 	"Can't Feel My Face" 	The Weeknd 	#1 for 8 weeks
3 	"Centuries" 	Fall Out Boy 	#1 for 3 weeks
4 	"Hello" 	Adele 	#1 for 8 weeks
5 	"Nobody Praying For Me" 	Seether 	#1 for 6 weeks
6 	"Worth It" 	Fifth Harmony ft. Kid Ink 	#1 for 2 weeks
7 	"FourFiveSeconds" 	Rihanna, Kanye West & Paul McCartney	#1 for 2 weeks
8 	"The Apple And The Tree" 	Graveyard 	#1 for 1 week
9 	"Lean On" 	Major Lazer & DJ Snake ft. MØ 	#2 for 6 weeks
10	"Nearly Forgot My Broken Heart"	Chris Cornell 	#1 for 2 weeks