2009 Number One Song Calendar |
| red # = weekly rock chartblue # = pop chart |
| 1 | Just Dance | 1 | 12-20-08 |
| Lady Gaga Featuring Colby O'Donis |
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| 2 | Single Ladies (Put A Ring On It) | 1 | 1-10-09 |
| Beyonce |
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| 3 | Love Story | 1 | 1-31-09 |
| Taylor Swift |
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| 4 | Gives You Hell | 14 | 1 | 2-07-09 |
| The All-American Rejects |
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| 5 | Circus | 1 | 2-14-09 |
| Britney Spears |
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| 6 | My Life Would Suck Without You | 1 | 3-07-09 |
| Kelly Clarkson |
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| 7 | Dead And Gone | 1 | 3-14-09 |
| T.I. Featuring Justin Timberlake |
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| 8 | Right Round | 1 | 3-21-09 |
| Flo Rida |
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| 9 | Poker Face | 1 | 3-28-09 |
| Lady Gaga |
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| 10 | Boom Boom Pow | 1 | 4-11-09 |
| The Black Eyed Peas |
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| 11 | Halo | 1 | 5-09-09 |
| Beyonce |
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| 12 | The Climb | 1 | 5-23-09 |
| Miley Cyrus |
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| 13 | Don't Trust Me | 1 | 6-06-09 |
| 3Oh!3 |
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| 14 | Fire Burning | 1 | 7-04-09 |
| Sean Kingston |
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| 15 | I Gotta Feeling | 1 | 7-18-09 |
| The Black Eyed Peas |
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| 16 | You Belong With Me | 1 | 8-08-09 |
| Taylor Swift |
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| 17 | Knock You Down | 1 | 8-15-09 |
| Keri Hilson Featuring Kanye West & Ne-Yo |
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| 18 | Use Somebody | 1 | 1 | 9-05-09 |
| Kings Of Leon |
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| 19 | Down | 1 | 9-19-09 |
| Jay Sean Featuring Lil Wayne |
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| 20 | Party In The U.S.A. | 1 | 10-03-09 |
| Miley Cyrus |
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| 21 | Whatcha Say | 1 | 10-24-09 |
| Jason Derulo |
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| 22 | Paparazzi | 1 | 10-31-09 |
| Lady Gaga |
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| 23 | 3 | 1 | 11-14-09 |
| Britney Spears |
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| 24 | Empire State Of Mind | 1 | 11-28-09 |
| Jay-Z + Alicia Keys |
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| 25 | Bad Romance | 1 | 12-12-09 |
| Lady Gaga |
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| 26 | TiK ToK | 1 | 12-26-09 |
| Kesha |
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