For all of you music fans out there in cyber land, who are curious about just WHAT was a certified hit, look new farther. The following is a compliation of the #1 hit songs, going back ten years in reverse order. These songs hit #1 on the Billboard Hot 100 Chart in the United States of America.

ARTIST TALLY
Who had the most hit songs these past ten years?

2007 hits
2006 hits
2005 hits
2004 hits
2003 hits
2002 hits
2001 hits
2000 hits
1999 hits
1998 hits
1997 hits

+ "Umbrella"
Rihanna f/ Jay-Z
June 9, 2007 - present (7 weeks + counting!)
CURRENT #1 SONG!!!

+ "Buy U A Drank (Shawty Snappin')"
T-Pain f/ Yung Joc
May 26, 2007 - June 2, 2007 (1 week)

+ "Makes Me Wonder"
Maroon 5
May 12, 2007 - May 26, 2007 (2 week); June 2, 2007 - June 9, 2007

+ "Girlfriend"
Avril Lavigne
May 5, 2007 - May 12, 2007 (1 week)

+ "Give It To Me"
Timbaland f/ Nelly Furtado & Justin Timberlake
April 21, 2007 - May 5, 2007 (2 weeks)

+ "Don't Matter"
Akon
April 7, 2007 - April 21, 2007 (2 weeks)

+ "Glamorous"
Fergie f/ Ludacris
March 24, 2007 - April 7, 2007 (2 weeks)

+ "This Is Why I'm Hot"
Mims
March 10, 2007 - March 24, 2007 (2 weeks)

+ "What Goes Around...Comes Around"
Justin Timberlake
March 2, 2007 - March 10, 2007 (1 week)

+ "Say It Right"
Nelly Furtado
February 24, 2007 - March 3, 2007 (1 week)

+ "Irreplaceable"
Beyonce
December 16, 2007 - February 24, 2007 (10 weeks)

+ "Irreplaceable"
Beyonce
December 16, 2006 - February 24, 2007 (10 weeks)<

+ "I Wanna Love You"
Akon f/ Snoop Dogg
December 2, 2006 - December 16, 2006 (2 weeks)

+ "My Love"
Justin Timberlake f/ T.I.
November 11, 2006 - December 2, 2006 (3 weeks)

+ "Money Maker"
Ludacris f/ Pharrell Williams
October 28, 2006 - November 11, 2006 (2 weeks)

+ "SexyBack"
Justin Timberlake
September 9, 2006 - October 28, 2006 (7 weeks)

+ "London Bridge"
Fergie
August 19, 2006 - September 9, 2006 (3 weeks)

+ "Promiscuous"
Nelly Furtado f/ Timbaland
July 8, 2006 - August 19, 2006 (5 weeks)

+ "Do I Make You Proud"
Taylor Hicks
July 1, 2006 - July 8, 2006 (1 week)

+ "Hips Don't Lie"
Shakira f/ Wyclef Jean
June 17, 2006 - July 1, 2006 (2 weeks)

+ "Ridn'"
Chamillionaire f/ Krayzie Bone
June 3, 2006 - June 17, 2006 (2 weeks)

+ "S.O.S."
Rihanna
May 13, 2006 - June 3, 2006 (3 weeks)

+ "Bad Day"
Daniel Powter
April 8, 2006 - May 13, 2006 (5 weeks)

+ "Temperature"
Sean Paul
April 1, 2006 - April 8, 2006 (1 week)

+ "So Sick"
Ne-Yo
March 18, 2006 - April 1, 2006 (2 weeks)

+ "You're Beautiful"
James Blunt
March 11, 2006 - March 18, 2006 (1 week)

+ "Check On It"
Beyonce f/ Slim Thug
February 4, 2006 - March 11, 2006 (5 weeks)

+ "Grillz"
Nelly f/ Paul Wall, Ali & Gipp
January 21, 2006 - February 4, 2006 (2 weeks)

+ "Laffy Taffy"
D4L
January 14, 2006 - January 21, 2006 (1 week)

+ "Don't Forget About Us"
Mariah Carey
December 31, 2005 - January 14, 2006 (2 weeks)

+ "Don't Forget About Us"
Mariah Carey
December 31, 2005 - January 14, 2006 (2 weeks)

+ "Run It!"
Chris Brown
November 26, 2005 - December 31, 2005 (4 weeks)

+ "Gold Digger"
Kanye West f/ Jamie Foxx
September 17, 2005 - November 26, 2005 (10 weeks)

+ "We Belong Together"
Mariah Carey
June 4, 2005 - September 17, 2005 (10 weeks)

+ "Hollaback Girl"
Gwen Stefani
May 7, 2005 - June 4, 2005 (4 weeks)

+ "Candy Shop"
50 Cent f/ Olivia
March 5, 2005 - May 7, 2005 (9 weeks)

+ "Let Me Love You"
Mario
January 1, 2005 - March 5, 2005 (9 weeks)

+ "Drop It Like It's Hot"
Snoop Dogg f/ Pharrell Williams
December 11, 2004 - January 1, 2005 (3 weeks)

+ "My Boo"
Usher & Alicia Keys
October 30, 2004 - December 11, 2004 (6 weeks)

+ "Goodies"
Ciara f/ Petey Pablo
September 11, 2004 - October 30, 2004 (7 weeks)

+ "Lean Back"
The Terror Squad
August 21, 2004 - September 11, 2004 (3 weeks)

+ "Slow Motion"
Juvenile f/ Soulja Slim
August 7, 2004 - August 21, 2004 (2 weeks)

+ "Confessions Part II"
Usher
July 24, 2004 - August 7, 2004 (2 weeks)

+ "Burn"
Usher
July 17, 2004 - July 24, 2004 &
Mary 22, 2004 - July 10, 2004 (8 weeks total)

+ "I Believe"
Fantasia
July 10, 204 - July 17, 2004 (1 week)

+ "Yeah!"
Usher f/ Lil John & Ludacris
February 28, 2004 - May 22, 2004 (12 weeks)

+ "Slow Jamz"
Twista f/ Kanye West & Jamie Foxx
February 21, 2004 - February 28, 2004 (1 week)

+ "The Way You Move"
Outkast
Febuary 14, 2007 - February 21, 2004 (1 week)

+ "Hey Ya!"
Outkast
December 13, 2003 - February 14, 2004 (9 weeks)

+ "Hey Ya!"
Outkast
December 13, 2003 - February 14, 2004 (9 weeks)

+ "Stand Up"
Ludacris f/ Shawnna
December 6, 2003 - December 13, 2006 (1 week)

+ "Baby Boy"
Beyonce f/ Sean Paul
October 4, 2003 - December 6, 2003 (9 weeks)

+ "Shake Ya Tailfeather"
Nelly, P. Diddy & Murphy Lee
September 6, 2003 - October 4, 2003 (4 weeks)

+ "Crazy In Love"
Beyonce f/ Jay-Z
July 12, 2003 - September 6, 2003 (8 weeks)

+ "This Is The Night"
Clay Aiken
June 28, 2003 - July 12, 2003 (2 weeks)

+ "21 Questions"
50 Cent f/ Nate Dogg
May 31, 2003 - June 28, 2003 (4 weeks)

+ "Get Busy"
Sean Paul
May 10, 2003 - May 31, 2003 (3 weeks)

+ "In Da Club"
50 Cent
March 8, 2003 - May 10, 2003 (8 weeks)

+ "All I Have"
Jennifer Lopez f/ LL Cool J
February 8, 2003 - March 8, 2003 (4 weeks)

+ "Bump Bump Bump"
B2K f/ P. Diddy
February 1, 2003 - February 8, 2003 (1 week)

+ "Lose Yourself"
Eminem
November 9, 2002 - February 1, 2003 (12 weeks)

+ "Lose Yourself"
Eminem
November 9, 2002 - February 1, 2003 (12 weeks)

+ "Dilemma"
Nelly f/ Kelly Rowland
October 19, 2002 - November 9, 2002 &
August 17, 2002 - October 5, 2002 (10 weeks total)

+ "A Moment Like This"
Kelly Clarkson
October 5, 2002 - October 19, 2002 (2 weeks)

+ "Hot In Herre"
Nelly
June 29, 2002 - August 17, 2002 (7 weeks)

+ "Foolish"
Ashanti
April 20, 2002 - June 29, 2002 (10 weeks)

+ "Ain't It Funny (Murder Remix)"
Jennifer Lopez f/ Ja Rule
March 9, 2002 - April 20, 2002 (6 weeks)

+ "Always On Time"
Ja Rule f/ Ashanti
February 23, 2002 - March 9, 2002 (2 weeks)

+ "U Got It Bad"
Usher
January 19, 2002 - February 23, 2002 &
December 15, 2001 - December 22, 2001 (6 weeks total)

+ "How You Remind Me"
Nickelback
December 22, 2001 - January 19, 2002 (4 weeks)

+ "How You Remind Me"
Nickelback
December 22, 2001 - January 19, 2002 (4 weeks)

+ "U Got It Bad"
Usher
January 19, 2002 - February 23, 2002 &
December 15, 2001 - December 22, 2001 (6 weeks total)

+ "Family Affair"
Mary J Blige
November 3, 2001 - December 15, 2001 (6 weeks)

+ "I'm Real (Murder Remix)"
Jennifer Lopez f/ Ja Rule
October 20, 2001 - November 3, 2001 &
Seteptember 8, 2001 - September 29, 2001 (5 weeks)

+ "Fallin'"
Alicia Keys
September 29, 2001 - October 13, 2001 &
August 18, 2001 - September 8, 2001 (6 weeks)

+ "Bootylicious"
Destiny's Child
August 4, 2001 - August 18, 2001 (2 weeks)

+ "U Remind Me"
Usher
July 7, 2001 - August 4, 2001 (4 weeks)

+ "Lady Marmalade"
Christina Aguilera, Mya, Pink & Lil Kim
June 2, 2001 - July 7, 2001 (5 weeks)

+ "All For You"
Janet Jackson
April 14, 2001 - June 2, 2001 (7 weeks)

+ "Butterfly"
Crazy Town
April 7, 2001 - April 14, 2001 &
March 24, 2001 - March 31, 2001 (2 weeks total)

+ "Angel"
Shaggy f/ Rayvon
March 31, 2001 - April 7, 2001 (1 week)

+ "Stutter (Remix)"
Joe f/ Mystikal
February 24, 2001 - March 24, 2001 (4 weeks)

+ "Ms. Jackson"
Outkast
February 17, 2001 - February 24, 2001 (1 week)

+ "It Wasn't Me"
Shaggy f/ Ricardo "RikRok" Ducent
February 3, 2001 - February 14, 2001 (2 weeks)

+ "Independant Woman Part I"
Destiny's Child
November 18, 2000 - February 3, 2001 (11 weeks)

+ "Independant Woman Part I"
Destiny's Child
November 18, 2000 - February 3, 2001 (11 weeks)

+ "With Arms Wide Open"
Creed
November 11, 2000 - November 18, 2000 (1 week)

+ "Come On Over Baby (All I Want Is You)"
Christina Aguilera
October 14, 2000 - November 11, 2000 (4 weeks)

+ "Music"
Madonna
September 16, 2000 - October 14, 2000 (4 weeks)

+ "Doesn't Really Matter"
Janet Jackson
August 26, 2000 - September 16, 2000 (3 weeks)

+ "Incomplete"
Sisqo
August 12, 2000 - August 26, 2000 (2 weeks)

+ "It's Gonna Be Me"
N'Sync
July 29, 2000 - August 12, 2000 (2 weeks)

+ "Bent"
Matchbox Twenty
July 22, 2000 - July 29, 2000 (1 week)

+ "Everything You Want"
Vertical Horizon
July 15, 2000 - July 22, 2000 (1 week)

+ "Be With You"
Enrique Igelesias
June 24, 2000 - July 15, 2000 (3 weeks)

+ "Try Again"
Aaliyah
June 17, 2000 - June 24, 2000 (1 week)

+ "Maria Maria"
Santana f/ The Product G&B
April 8, 2000 - June 17, 2000 (10 weeks)

+ "Say My Name"
Destiny's Child
March 18, 2000 - April 8, 2000 (3 weeks)

+ "Amazed"
Lonestar
March 4, 2000 - March 18, 2000 (2 weeks)

+ "I Knew I Loved You"
Savage Garden
February 26, 2000 - March 4, 2000 &
January 29, 2000 - February 19, 2000 (4 weeks total)

+ "Thank God I Found You"
Mariah Carey f/ Joe & 98 Degrees
February 19, 2000 - March 4, 2000 (1 week)

+ "What A Girl Wants"
Christina Aguilera
January 15, 2000 - January 29, 2000 (2 weeks)

+ "Smooth"
Santana f/ Rob Thomas
October 23, 1999 - January 15, 2000 (12 weeks)

+ "Smooth"
Santana f/ Rob Thomas
October 23, 1999 - January 15, 2000 (12 weeks)

+ "Heartbreaker"
Mariah Carey f/ Jay-Z
October 9, 1999 - October 23, 1999 (2 weeks)

+ "Unpretty"
TLC
September 18, 1999 - October 9, 1999 (3 weeks)

+ "Bailamos"
Enrique Igelsias
September 4, 1999 - September 18, 1999 (2 weeks)

+ "Genie In A Bottle"
Christina Aguilera
July 31, 1999 - September 4, 1999 (5 weeks)

+ "Wild Wild West"
Will Smith f/ Dru Hill & Kool Moe Dee
July 24, 1999 - July 31, 1999 (1 week)

+ "Bills Bills Bills"
Destiny's Child
July 17, 1999 - July 24, 1999 (1 week)

+ "If You Had My Love"
Jennifer Lopez
June 12, 1999 - July 17, 1999 (5 weeks)

+ "Livin' La Vida Loca"
Ricky Martin
May 8, 1999 - June 12, 1999 (5 weeks)

+ "No Scrubs"
TLC
April 10, 1999 - May 8, 1999 (4 weeks)

+ "Believe"
Cher
March 13, 1999 - April 10, 1999 (4 weeks)

+ "Angel of Mine"
Monica
February 13, 1999 - March 13, 1999 (4 weeks)

+ "...Baby One More Time"
Britney Spears
January 30, 1999 - February 13, 1999 (2 weeks)

+ "Have You Ever?"
Brandy
January 16, 1999 - January 30, 1999 (2 weeks)

+ "I'm Your Angel"
R.Kelly & Celine Dion
December 5, 1998 - January 16, 1999 (6 weeks)

+ "I'm Your Angel"
R.Kelly & Celine Dion
December 5, 1998 - January 16, 1999 (6 weeks)

+ "Lately"
Divine
November 28, 1998 - December 5, 1998 (1 week)

+ "Doo Wop (That Thing)"
Lauryn Hill
November 14, 1998 - November 28, 1998 (2 weeks)

+ "The First Night"
Monica
October 24, 1998 - November 14, 1998 &
October 3, 1998 - October 17, 1998 (5 weeks)

+ "One Week"
Barenaked Ladies
October 17, 1998 - October 24, 1998 (1 week)

+ "I Don't Wanna Miss A Thing"
Aerosmith
September 5, 1998 - October 3, 1998 (4 weeks)

+ "The Boy Is Mine"
Brandy & Monica
June 6, 1998 - September 5, 1998 (13 weeks)

+ "Too Close"
Next
May 30, 1998 - June 6, 1998 &
April 25, 1998 - May 23, 1998 (5 weeks total)

+ "My All"
Mariah Carey
May 23, 1998 - May 30, 1998 (1 week)

+ "All My Life"
KC & JoJo
April 4, 1998 - April 25, 1998 (3 weeks)

+ "Gettin' Giggy Wit It"
Will Smith
March 14, 1998 - April 4, 1998 (3 weeks)

+ "My Heart Will Go On"
Celine Dion
February 28, 1998 - March 14, 1998 (2 weeks)

+ "Nice And Slow"
Usher
February 14, 1998 - February 28, 1998 (2 weeks)

+ "Together Again"
Janet Jackson
January 31, 1998 - February 14, 1998 (2 weeks)

+ "Truly Madly Deeply"
Savage Garden
January 17, 1998 - January 31, 1998 (2 weeks)

+ "Something About The Way You Look Tonight/Candle In the Wind 1997"
Elton John
October 11, 1997 - January 17, 1998 (14 weeks)

+ "Something About The Way You Look Tonight/Candle In the Wind 1997"
Elton John
October 11, 1997 - January 17, 1998 (14 weeks)

+ "4 Seasons of Loneliness"
Boyz II Men
October 4, 1997 - October 11, 1997 (1 week)

+ "Honey"
Mariah Carey
September 13, 1997 - October 4, 1997 (3 weeks)

+ "Mo Money Mo Problems"
The Notorious B.I.G. f/ Puff Daddy & Ma$e
August 30, 1997 - September 13, 1997 (2 weeks)

+ "I'll Be Missing You"
Puff Daddy & Faith Evans f/ 112
June 14, 1997 - August 30, 1997 (11 weeks)

+ "MMMBop"
Hanson
May 24, 1997 - June 14, 1997 (3 weeks)

+ "Hypnotize"
The Notorious B.I.G.
May 3, 1997 - May 24, 1997 (3 weeks)

+ "Can't Nobody Hold Me Down"
Puff Daddy f/ Ma$e
March 22, 1997 - May 3, 1997 (6 weeks)

+ "Wannabe"
Spice Girls
February 22, 1997 - March 22, 1997 (4 weeks)

+ "Un-Break My Heart"
Toni Braxton
December 7, 1996 - February 22, 1997 (11 weeks)

Tallied by last name first. (/f)= featuring on given track.

#/SYMBOLS
+ 112 [1] (1997-I'll Be Missing You (/f))
+ 50 Cent [3] (2005-Candy Shop; 2003-21 Questions, In Da Club)
+ 98 Degrees [1] (2000-Thank God I Found You (/f))

A-D
+ Aaliyah [1] (2000-Try Again)
+ Aerosmith [1] (1998-I Don't Wanna Miss A Thing)
+ Aguilera, Christina [4] (2001-Lady Marmalade; 2000-Come On Over Baby (All I Want Is You), What A Girl Wants; 1999-Genie In A Bottle)
+ Aiken, Clay [1] (2003-This Is The Night)
+ Akon [2] (2007-Don't Matter; 2006-I Wanna Love You)
+ Ali [1] (2006-Grillz (f/)
+ Ashanti [2] (2002-Foolish, Always On Time (/f))
+ B2K [1] (2003-Bump Bump Bump)
+ Barenaked Ladies [1] (1998-One Week)
+ Beyonce* [4] (2007-Irreplaceable; 2006-Check On It; 2003-Baby Boy, Crazy In Love)
+ Blige, Mary J [1] (2001-Family Affair)
+ Blunt, James [1] (2006-You're Beautiful)
+ Boyz II Men [1] (1997-4 Seasons of Lonliness)
+ Brandy [2] (1999-Have You Ever?; 1998-The Boy Is Mine)
+ Braxton, Toni [1] (1997-UnBreak My Heart)
+ Brown, Chris [1] (2005-Run It!)
+ Carey, Mariah [6] (2006-Don't You Forget About Us; 2005-We Belong Together; 2000-Thank God I Found You; 1999-Heartbreaker; 1998-My All; 1997-Honey)
+ Chamillionaire [1] (2006-Ridin')
+ Cher [1] (1999-Believe)
+ Ciara [1] (2004-Goodies)
+ Clarkson, Kelly [1] (2002-A Moment Like This)
+ Crazy Town [1] (2001-Butterfly)
+ Creed [1] (2000-With Arms Wide Open)
+ D4L [1] (2006-Laffy Taffy)
+ Destiny's Child [4] (2001-Bootylicious, Independant Women Part I; 2000-Say My Name; 1999-Bills Bills Bills)
+ Diddy [5] (2003-Shake Ya Tailfeather, Bump Bump Bump (/f); 1997-Mo Money, Mo Problems (/f), I'll Be Missing You, Can't Nobody Hold Me Down)
+ Dion, Celine [2] (1999-I'm Your Angel; 1998-My Heart Will Go On)
+ Divine [1] (1998-Lately)
+ Dru Hill$ [1] (1999-Wild Wild West (/f))
+ Ducent, Ricardo "RikRok" [1] (2001-It Wasn't Me (/f))

E-H
+ Eminem [1] (2003-Lose Yourself)
+ Evans, Faith [1] (1997-I'll Be Missing You (/f))
+ Fantasia [1] (2004-I Believe)
+ Fergie [2] (2007-Glamorous; 2006-London Bridge)
+ Foxx, Jamie [2] (2005-Gold Digger (/f); 2004-Slow Jamz (/f))
+ Furtado, Nelly [2] (2007-Say It Right; 2006-Promiscuous)
+ Gipp [1] (2006-Grillz (f/)
+ Hanson [1] (1997-MMMBop)
+ Hicks, Taylor [1] (2006-Do I Make You Proud)
+ Hill, Lauryn [1] (1998-Doo Wop (That Thing)

I-L
+ Igelesias, Enrique [2] (2000-Be With You; 1999-Bailamos)
+ Ja Rule [3] (2002-Ain't It Funny (Murder Remix) (/f), Always On Time; 2001-I'm Real (Murder Remix) (/f))
+ Jackson, Janet [3] (2001-All For You; 2000-Doesn't Really Matter; 1998-Together Again)
+ Jay-Z [3] (2007-Umbella (/f); 2003-Crazy In Love (/f); 1999-Heartbreaker (/f))
+ Joe [2] (2001-Stutter (Remix); 2000-Thank God I Found You (/f))
+ John, Elton [1] (1998-Something About The Way You Look Tonight/Candle In the Wind 1997)
+ Juvenile [1] (2004-Slow Motion)
+ Keys, Alicia [2] (2004-My Boo; 2001-Fallin')
+ KC & JoJo [1] (1998-All My Life)
+ Kool Moe Dee [1] (1999-Wild Wild West (/f))
+ Krayzie Bone [1] (2006-Ridin' (/f))
+ Lavigne, Avril [1] (2007-Girlfriend)
+ Lil John [1] (2004-Yeah! (/f))
+ Lil Kim [1] (2001-Lady Marmalade)
+ LL Cool J [1] (2003-All I Have (/f))
+ Lonestar [1] (2000-Amazed)
+ Lopez, Jennifer [4] (2003-All I Have; 2002-Ain't It Funny (Murder Remix); 2001-I'm Real (Murder Remix); 1999-If You Had My Love)
+ Ludacris [4] (2007-Glamorous (/f); 2006-Money Maker; 2004-Yeah! (/f); 2003-Stand Up)

M-P
+ Madonna [1] (2000-Music)
+ Mario [1] (2005-Let Me Love You)
+ Maroon 5 [1] (2007-Makes Me Wonder)
+ Martin, Ricky [1] (1999-Livin' La Vida Loca)
+ Mase [2] (1997-Mo Money, Mo Problems (/f), Can't Nobody Hold Me Down)
+ Matchbox 20 [1] (2000-Bent)
+ MIMS [1] (2007-This Is Why I'm Hot)
+ Monica [3] (1999-Angel of Mine; 1998-The First Night, The Boy Is Mine)
+ Murphy Lee [1] (2003-Shake Ya Tailfeather)
+ Mya [1] (2001-Lady Marmalade)
+ Mystikal [1] (2001-Stutter (Remix) (/f))
+ N'Sync% [1] (2000-It's Gonna Be Me)
+ Nate Dogg [1] (2003-21 Questions (/f))
+ Ne-Yo [1] (2006-So Sick)
+ Nelly [4] (2006-Grillz; 2003-Shake Ya Tailfeather; 2002-Dilemma, Hot In Herre)
+ Next [1] (1998-Too Close)
+ Nickelback [1] (2002-How You Remind Me)
+ Notorious BIG, The [2] (1997-Mo Money, Mo Problems, Hypnotize)
+ Olivia [1] (2005-Candy Shop (/f))
+ Outkast [3] (2004-The Way You Move, Hey Ya!; 2001-Ms Jackson)
+ Pablo, Petey [1] (2004-Goodies (/f))
+ Pink [1] (2001-Lady Marmalade)
+ Powter, Daniel [1] (2006-Bad Day)
+ Product G&B, The [1] (2000-Maria Maria (/f))

Q-T
+ R.Kelly [1] (1999-I'm Your Angel)
+ Rayvon [1] (2001-Angel (/f))
+ Rihanna [1] ( 2007-Umbrella; 2006-S.O.S.)
+ Rowland, Kelly* [1] (2002-Dilemma (/f))
+ Santana [2] (2000-Maria Maria, Smooth)
+ Savage Garden [2] (2000-I Knew I Loved You; 1998-Truly Madly Deeply)
+ Sean Paul [3] (2006-Temperature; 2003-Baby Boy, Get Busy)
+ Shaggy [1] (2001-Angel, It Wasn't Me)
+ Shakira [1] (2006-Hips Don't Lie)
+ Shawnna [1] (2003-Stand Up (/f))
+ Sisqo [1] (2000-Incomplete)
+ Slim Thug [1] (2006-Check On It (/f))
+ Smith, Will [2] (1999-Wild Wild West; 1998-Gettin' Jiggy With It)
+ Snoop Dogg [2] (2006-I Wanna Love You (/f); 2004-Drop It Like It's Hot)
+ Soulja Slim [1] (2004-Slow Motion (/f))
+ Spears, Britney [1] (1999-...Baby One More Time)
+ Spice Girls [1] (1997-Wannabe)
+ Stefani, Gwen [1] (2005-Hollaback Girl)
+ Terror Squad [1] (2004-Lean Back)
+ Thomas, Rob# [1] (2000-Smooth (/f)
+ T.I. [1] (2006-My Love (/f))
+ Timbaland [2] (2007-Give It To Me; 2006-Promiscuous (/f))
+ Timberlake, Justin [3] (2007-What Goes Around...Comes Around; 2006-My Love, SexyBack)
+ TLC [2] (1999-Unpretty, No Scrubs)
+ T-Pain [1] (2007-Buy U A Drank)
+ Twista [1] (2004-Slow Jamz)

U-Z
+ Usher [7] (2004-My Boo, Confessions Part II, Burn, Yeah!; 2002-U Got It Bad; 2001-U Remind Me; 1998-Nice And Slow)
+ Vertical Horizon [1] (2000-Everything You Want)
+ Wall, Paul [1] (2006-Grillz (f/)
+ West, Kanye [2] (2005-Gold Digger; 2004-Slow Jamz (/f))
+ Williams, Pharrell [2] (2006-Money Maker (/f); 2004-Drop It Like It's Hot (/f))
+ Wyclef Jean [1] (2006-Hips Don't Lie (/f))
+ Yung Joc [1] (2007-Buy You A Drank (/f))

*= Both Beyonce and Kelly Rowland were members of Destiny's Child, and if those #1s are factored in, they have a respective number of 8 and 5.
#= If his work as lead singer of Matchbox 20 is added, Rob Thomas has a grand total of 2 #1 singles.
$= If his work as lead singler of Dru Hill is added, Sisqo has a total of 2 #1 singles.
%= If his work with *NSYNC is added, Justin Timberlake has a grand total of 5 #1s (with his f/ work on Timbaland's "Give It To Me.")