List of Billboard Hot 100 number-one singles of the 2000s

The data were compiled by Nielsen SoundScan based collectively on each single's weekly physical (CD, vinyl and cassette) and digital sales, airplay, and streaming.

While Santana's "Smooth" featuring Rob Thomas topped the chart in the first two weeks of 2000, it was not counted as a number-one single of the 2000s decade by Billboard because it had topped the chart in October 1999, and thus was counted as a number-one single of the 1990s decade only.

[4] Overall, the decade saw the dominance of hip hop and R&B releases with dance beats and pop crossover, replacing the 1990s' trend of sentimental ballads.

[6] Note: The best-performing singles on the Billboard Hot 100 of 2000 and 2001 were Faith Hill's "Breathe" and Lifehouse's "Hanging by a Moment", respectively.

Rihanna's "Umbrella" featuring Jay-Z, for example, was counted for both artists because they are both credited on the single.

Usher wearing sunglasses smiling
Usher accumulated the most number-one entries (seven) and the most weeks atop the chart (42 weeks) throughout the 2000s.
Beyoncé performing with an emotional facial expression
Beyoncé spent 36 weeks atop the Billboard Hot 100 with five entries, including the number-one song of 2007 , " Irreplaceable ".
Rihanna singing while closing her eyes
Rihanna accumulated five number-one singles, spending 19 weeks atop the chart.
Mariah Carey in 2005.
Mariah Carey earned four number-one singles, including the best-performing single of the decade " We Belong Together ", which spent 14 weeks atop the Hot 100.
Alicia Keys playing the piano and singing
Alicia Keys scored four number-one entries, totaling 22 weeks atop the chart.
50 Cent at a conference, speaking on a microphone
50 Cent scored four number ones, including 2003's best-performing single , " In da Club ".
Supafest 2012, Sydney, Australia; Chris Brown, Kelly Rowland, Lupe Fiasco, Naughty By Nature and more
Ludacris gathered four number-one songs, including a feature on Usher's " Yeah! ", which topped the Year-End chart of 2004 .
Nelly holding a bottle of perfume
Nelly spent 23 weeks atop the chart with four entries.
Justin Timberlake performing onstage, about to taking off his coat
Justin Timberlake gained three number-one songs as a lead singer and one as a featured artist.
Christina Aguilera singing with an emotional facial expression
Christina Aguilera scored three number-one entries, including the opening number one of the decade " What a Girl Wants ".
Jay-Z at a conference
Jay-Z amassed three number-one singles, including the concluding number one of the decade " Empire State of Mind ", featuring Alicia Keys.
Four members of The Black Eyed Peas at a conference
The Black Eyed Peas spent the record 26 consecutive weeks atop the Hot 100, with " Boom Boom Pow " and " I Gotta Feeling ", both of which dominated the chart for over 10 weeks.
Eminem performing onstage
Eminem 's " Lose Yourself " topped the Hot 100 for 12 weeks in 2002.