List of Billboard Hot 100 number ones of 1999

The Billboard Hot 100 is a chart that ranks the best singles of the United States. Published by Billboard magazine, the data are compiled by Nielsen SoundScan based collectively on each single's weekly physical sales and airplays. There were 15 singles that topped the chart this year. The first of these, "I'm Your Angel" by R. Kelly and Celine Dion, spent two weeks at the top, concluding a six-week run that had begun in December 1998.

Santana and Rob Thomas' "Smooth" was the longest-running single of 1999, topping the chart for 10 consecutive weeks.

During the year, 11 acts had achieved a first U.S. number-one single, including: Britney Spears, Ricky Martin, Jennifer Lopez, Destiny's Child, Dru Hill, Kool Moe Dee, Christina Aguilera, Enrique Iglesias, Jay-Z, Santana, and Rob Thomas. The longest running number-one single is "Smooth" by Santana featuring Matchbox Twenty frontman Rob Thomas, which attained 12 weeks at number-one. Ten of those weeks were logged in 1999 and two additional weeks were logged in 2000.

TLC was the only act with more than one number one song, with them hitting the top twice.

Chart history

Pop singer Cher earned her first number-one single since 1974 and fifth overall when "Believe" topped the chart.

Pop singer Christina Aguilera earned her first U.S. number-one single, "Genie in a Bottle".

Spanish singer Enrique Iglesias earned his first U.S. number-one single with "Bailamos" which stayed for two consecutive weeks.

Pop singer Britney Spears earned her first U.S. number-one peak with "...Baby One More Time".

Singer Ricky Martin earned his first U.S. number-one single with "Livin' la Vida Loca".

Key

†	Indicates best-performing single of 1999

No.	Issue date	Song	Artist(s)	Ref.
836	January 2	"I'm Your Angel"	R. Kelly and Céline Dion	[1]
	January 9			[2]
837	January 16	"Have You Ever?"	Brandy	[3]
	January 23			[4]
838	January 30	"...Baby One More Time"	Britney Spears	[5]
	February 6			[6]
839	February 13	"Angel of Mine"	Monica	[7]
	February 20			[8]
	February 27			[9]
	March 6			[10]
840	March 13	"Believe"†	Cher	[11]
	March 20			[12]
	March 27			[13]
	April 3			[14]
841	April 10	"No Scrubs"	TLC	[15]
	April 17			[16]
	April 24			[17]
	May 1			[18]
842	May 8	"Livin' la Vida Loca"	Ricky Martin	[19]
	May 15			[20]
	May 22			[21]
	May 29			[22]
	June 5			[23]
843	June 12	"If You Had My Love"	Jennifer Lopez	[24]
	June 19			[25]
	June 26			[26]
	July 3			[27]
	July 10			[28]
844	July 17	"Bills, Bills, Bills"	Destiny's Child	[29]
845	July 24	"Wild Wild West"	Will Smith featuring Dru Hill and Kool Moe Dee	[30]
846	July 31	"Genie in a Bottle"	Christina Aguilera	[31]
	August 7			[32]
	August 14			[33]
	August 21			[34]
	August 28			[35][36]
847	September 4	"Bailamos"	Enrique Iglesias	[37]
	September 11			[38]
848	September 18	"Unpretty"	TLC	[39]
	September 25			[40]
	October 2			[41]
849	October 9	"Heartbreaker"	Mariah Carey featuring Jay-Z	[42][43]
	October 16			[44]
850	October 23	"Smooth"	Santana featuring Rob Thomas	[45]
	October 30			[46]
	November 6			[47]
	November 13			[48]
	November 20			[49]
	November 27			[50]
	December 4			[51]
	December 11			[52]
	December 18			[53]
	December 25			[54]

Number-one artists

List of number-one artists by total weeks at number one

Position	Artist	Weeks at No. 1
1	Santana	10
	Rob Thomas
3	TLC	7
4	Ricky Martin	5
	Jennifer Lopez
	Christina Aguilera
7	Monica	4
	Cher
9	R. Kelly	2
	Céline Dion
	Brandy
	Britney Spears
	Enrique Iglesias
	Mariah Carey
	Jay-Z
16	Destiny's Child	1
	Will Smith
	Dru Hill
	Kool Moe Dee

See also

• 1999 in music
• List of Billboard number-one singles
• Billboard Year-End Hot 100 singles of 1999
• List of Billboard Hot 100 top 10 singles in 1999
• List of Billboard Hot 100 number-one singles of the 1990s