List of UK Dance Singles Chart number ones of 2009
These are The Official UK Charts Company UK Dance Chart number one hits of 2009. The dates listed below represent the Saturday after the Sunday the chart was announced, as per the way the dates are given in chart publications such as the ones produced by Guinness and Virgin.
Number ones
| Week Ending | Song title | Artist |
| 3 January | "Pjanoo" | Eric Prydz |
| 10 January | "Pjanoo" | Eric Prydz |
| 17 January | "Infinity 2008" | Guru Josh Project |
| 24 January | "Day 'n' Nite" | Kid Cudi vs. Crookers |
| 31 January | "Day 'n' Nite" | Kid Cudi vs. Crookers |
| 7 February | "Day 'n' Nite" | Kid Cudi vs. Crookers |
| 14 February | "Day 'n' Nite" | Kid Cudi vs. Crookers |
| 21 February | "Day 'n' Nite" | Kid Cudi vs. Crookers |
| 28 February | "Omen" | The Prodigy |
| 7 March | "Omen" | The Prodigy |
| 14 March | "Omen" | The Prodigy |
| 21 March | "Omen" | The Prodigy |
| 28 March | "Day 'n' Nite" | Kid Cudi vs. Crookers |
| 4 April | "Show Me Love" | Steve Angello & Laidback Luke featuring Robin S |
| 11 April | "Show Me Love" | Steve Angello & Laidback Luke featuring Robin S |
| 18 April | "Show Me Love" | Steve Angello & Laidback Luke featuring Robin S |
| 25 April | "Show Me Love" | Steve Angello & Laidback Luke featuring Robin S |
| 2 May | "Basement Track" | High Contrast |
| 9 May | "Day 'n' Nite" | Kid Cudi vs. Crookers |
| 16 May | "Show Me Love" | Steve Angello & Laidback Luke featuring Robin S |
| 23 May | "Warrior's Dance" | The Prodigy |
| 30 May | "Bonkers" | Dizzee Rascal & Armand van Helden |
| 6 June | "Bonkers" | Dizzee Rascal & Armand van Helden |
| 13 June | "Bonkers" | Dizzee Rascal & Armand van Helden |
| 20 June | "Release Me" | Agnes |
| 27 June | "When Love Takes Over" | David Guetta featuring Kelly Rowland |
| 4 July | "When Love Takes Over" | David Guetta featuring Kelly Rowland |
| 11 July | "When Love Takes Over" | David Guetta featuring Kelly Rowland |
| 18 July | "When Love Takes Over" | David Guetta featuring Kelly Rowland |
| 25 July | "Red Mist VIP / Fired Up" | Danny Byrd / DJ Friction & K Tee |
| 1 August | "I Remember" | Deadmau5 & Kaskade |
| 8 August | "Rock It / Follow the Light" | Sub Focus |
| 15 August | "When Love Takes Over" | David Guetta featuring Kelly Rowland |
| 22 August | "One More Chance" | Bloc Party |
| 29 August | "Ready For The Weekend" | Calvin Harris |
| 5 September | "Ready For The Weekend" | Calvin Harris |
| 12 September | "Take Me To The Hospital" | Prodigy |
| 19 September | "Take Me To The Hospital" | Prodigy |
| 26 September | "Celebration" | Madonna |
| 3 October | "Celebration" | Madonna |
| 10 October | "Celebration" | Madonna |
| 17 October | "Celebration" | Madonna |
| 24 October | "Celebration" | Madonna |
| 31 October | "Celebration" | Madonna |
| 7 November | "aNYway" | Armand Van Helden and A-Trak presents Duck Sauce |
| 14 November | "aNYway" | Armand Van Helden and A-Trak presents Duck Sauce |
| 21 November | "aNYway" | Armand Van Helden and A-Trak presents Duck Sauce |
| 28 November | "I Need You" | N-Dubz |
| 5 December | "I Need You" | N-Dubz |
| 12 December | "I Need You" | N-Dubz |
| 20 December | "Let the Bass Kick in Miami Girl" | Chuckie and LMFAO |
| 27 December | "Let the Bass Kick in Miami Girl" | Chuckie and LMFAO |