# List of number-one dance airplay hits of 2009 (U.S.)

These are the Billboard magazine Hot Dance Airplay number-one hits of 2009.
Note that Billboard publishes charts with an issue date approximately 7–10 days in advance.
| Issue date | Song | Artist(s) | Remixer(s) |
| January 3 | "Miles Away" | Madonna | Thin White Duke, Morgan Page, Johnny Vicious, Rebirth, Aaron LaCrate |
| January 10 | "Single Ladies (Put a Ring on It)" | Beyoncé | Maurice Joshua, Craig C, Dave Audé, DJ Escape, Tony Coluccio |
| January 17 | "Single Ladies (Put a Ring on It)" | Beyoncé | Maurice Joshua, Craig C, Dave Audé, DJ Escape, Tony Coluccio |
| January 24 | "Single Ladies (Put a Ring on It)" | Beyoncé | Maurice Joshua, Craig C, Dave Audé, DJ Escape, Tony Coluccio |
| January 31 | "Imagination" | Jes | Kaskade, Tiesto |
| February 7 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| February 14 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| February 21 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| February 28 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| March 7 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| March 14 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| March 21 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| March 28 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| April 4 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| April 11 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| April 18 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| April 25 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| May 2 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| May 9 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| May 16 | "Poker Face" | Lady Gaga | Dave Audé, Jody Den Broeder |
| May 23 | "Infinity 2008" | Guru Josh Project | Klaas, Jerome Isma-ae |
| May 30 | "Infinity 2008" | Guru Josh Project | Klaas, Jerome Isma-ae |
| June 6 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| June 13 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| June 20 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| June 27 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| July 4 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| July 11 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| July 18 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| July 25 | "Let the Feelings Go" | Annagrace | Peter Luts, Sem Thomassen/S. Tempel, Hardwell |
| August 1 | "Let the Feelings Go" | Annagrace | Peter Luts, Sem Thomassen/S. Tempel, Hardwell |
| August 8 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| August 15 | "When Love Takes Over" | David Guetta featuring Kelly Rowland | |
| August 22 | "Let the Feelings Go" | Annagrace | |
| August 29 | "Let the Feelings Go" | Annagrace | |
| September 5 | "Let the Feelings Go" | Annagrace | |
| September 12 | "Let the Feelings Go" | Annagrace | |
| September 19 | "Let the Feelings Go" | Annagrace | |
| September 26 | "Evacuate the Dancefloor" | Cascada | Wideboys, Chriss Ortega, Frisco, Cahill, Rob Mayth, Lockout, PH, Ultrabeat |
| October 3 | "Evacuate the Dancefloor" | Cascada | Wideboys, Chriss Ortega, Frisco, Cahill, Rob Mayth, Lockout, PH, Ultrabeat |
| October 10 | "Obsessed" | Mariah Carey | Gucci Mane, Seamus Haji & Paul Emanuel, Jump Smokers, Friscia & Lamboy, Tim Cahill |
| October 17 | "I Remember" | Deadmau5 vs. Kaskade | J Majik & Wickaman, Caspa |
| October 24 | "I Remember" | Deadmau5 vs. Kaskade | J Majik & Wickaman, Caspa |
| October 31 | "Sexy Chick" | David Guetta featuring Akon | |
| November 7 | "Sexy Chick" | David Guetta featuring Akon | |
| November 14 | "Sexy Chick" | David Guetta featuring Akon | |
| November 21 | "I Will Be Here" | Tiësto featuring Sneaky Sound System | Tiësto, Benny Benassi, Wolfgang Gartner, Laidback Luke |
| November 28 | "I Will Be Here" | Tiësto featuring Sneaky Sound System | Tiësto, Benny Benassi, Wolfgang Gartner, Laidback Luke |
| December 5 | "Sexy Chick" | David Guetta featuring Akon | |
| December 12 | "Sexy Chick" | David Guetta featuring Akon | |
| December 19 | "Kiss Me Back" | Kim Sozzi | Jeff Martens |
| December 26 | "Sexy Chick" | David Guetta featuring Akon | |