The Billboard Hot 100 Chart is published weekly by Billboard Magazine and is the industry standard for determining the most popular songs in the United States for a given week.
Below are the singles that were number one every week in 2009; such as "Single Ladies (Put A Ring On It)" by Beyonce.
2009 Billboard #1 Singles
| Date | Song | Artist | |
| 2009-12-26 | Empire State Of Mind | Jay-Z |
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| 2009-12-19 | Empire State Of Mind | Jay-Z |
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| 2009-12-12 | Empire State Of Mind | Jay-Z |
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| 2009-12-05 | Empire State Of Mind | Jay-Z |
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| 2009-11-28 | Empire State Of Mind | Jay-Z |
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| 2009-11-21 | Fireflies | Owl City |
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| 2009-11-14 | Whatcha Say | Jason DeRulo |
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| 2009-11-07 | Fireflies | Owl City |
|
| 2009-10-31 | Down | Jay Sean |
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| 2009-10-24 | 3 | Britney Spears |
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| 2009-10-17 | Down | Jay Sean |
|
| 2009-10-10 | I Gotta Feeling | Black Eyed Peas |
 |
| 2009-10-03 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-09-26 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-09-19 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-09-12 | I Gotta Feeling | Black Eyed Peas |
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| 2009-09-05 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-08-29 | I Gotta Feeling | Black Eyed Peas |
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| 2009-08-22 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-08-15 | I Gotta Feeling | Black Eyed Peas |
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| 2009-08-08 | I Gotta Feeling | Black Eyed Peas |
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| 2009-08-01 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-07-25 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-07-18 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-07-11 | I Gotta Feeling | Black Eyed Peas |
|
| 2009-07-04 | Boom Boom Pow | Black Eyed Peas |
 |
| 2009-06-27 | Boom Boom Pow | Black Eyed Peas |
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| 2009-06-20 | Boom Boom Pow | Black Eyed Peas |
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| 2009-06-13 | Boom Boom Pow | Black Eyed Peas |
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| 2009-06-06 | Boom Boom Pow | Black Eyed Peas |
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| 2009-05-30 | Boom Boom Pow | Black Eyed Peas |
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| 2009-05-23 | Boom Boom Pow | Black Eyed Peas |
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| 2009-05-16 | Boom Boom Pow | Black Eyed Peas |
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| 2009-05-09 | Boom Boom Pow | Black Eyed Peas |
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| 2009-05-02 | Boom Boom Pow | Black Eyed Peas |
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| 2009-04-25 | Boom Boom Pow | Black Eyed Peas |
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| 2009-04-18 | Boom Boom Pow | Black Eyed Peas |
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| 2009-04-11 | Poker Face | Lady GaGa |
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| 2009-04-04 | Right Round | Flo Rida |
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| 2009-03-28 | Right Round | Flo Rida |
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| 2009-03-21 | Right Round | Flo Rida |
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| 2009-03-14 | Right Round | Flo Rida |
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| 2009-03-07 | Right Round | Flo Rida |
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| 2009-02-28 | Right Round | Flo Rida |
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| 2009-02-21 | Crack A Bottle | Eminem |
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| 2009-02-14 | My Life Would Suck Without You | Kelly Clarkson |
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| 2009-02-07 | My Life Would Suck Without You | Kelly Clarkson |
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| 2009-01-31 | Just Dance | Lady GaGa |
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| 2009-01-24 | Just Dance | Lady GaGa |
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| 2009-01-10 | Single Ladies (Put A Ring On It) | Beyonce |
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| 2009-01-03 | Single Ladies (Put A Ring On It) | Beyonce |
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Every attempt is made to insure the accuracy of the above information, however accuracy is not guaranteed.
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