These hits topped the Ultratop 50 in 2015.[1]
| Flanders | |||
|---|---|---|---|
| Issue date | Song | Artist | |
| 3 January | "Are You With Me" | Lost Frequencies | |
| 10 January | "Uptown Funk" | Mark Ronson featuring Bruno Mars | |
| 17 January | |||
| 24 January | |||
| 31 January | "Christine" | Christine and the Queens | |
| 7 February | |||
| 14 February | |||
| 21 February | |||
| 28 February | "Cheerleader" (Felix Jaehn remix) | OMI | |
| 7 March | |||
| 14 March | |||
| 21 March | |||
| 28 March | "Christine" | Christine and the Queens | |
| 4 April | "Cheerleader" (Felix Jaehn remix) | OMI | |
| 11 April | "Goeiemorgend, Goeiendag" (Live) | ||
| 18 April | "See You Again" | ||
| 25 April | |||
| 2 May | |||
| 9 May | "Een Ster (Live)" | Stan Van Samang | |
| 16 May | "The Hum" | Dimitri Vegas & Like Mike Vs. Ummet Ozcan | |
| 23 May | "Een Ster (Live)" | Stan Van Samang | |
| 30 May | "Rhythm Inside" | ||
| 6 June | |||
| 13 June | |||
| 20 June | |||
| 27 June | "Reality" | Lost Frequencies featuring Janieck Devy | |
| 4 July | |||
| 11 July | |||
| 18 July | "Higher Place" | Dimitri Vegas & Like Mike feat. Ne-Yo | |
| 25 July | "Reality" | Lost Frequencies featuring Janieck Devy | |
| 1 August | "Higher Place" | Dimitri Vegas & Like Mike feat. Ne-Yo | |
| 8 August | |||
| 15 August | |||
| 22 August | "Reality" | Lost Frequencies featuring Janieck Devy | |
| 29 August | "Higher Place" | Dimitri Vegas & Like Mike feat. Ne-Yo | |
| 5 September | |||
| 12 September | |||
| 19 September | |||
| 26 September | "Catch & Release" (Deepend remix) | Matt Simons | |
| 3 October | |||
| 10 October | |||
| 17 October | |||
| 24 October | |||
| 31 October | "Hello" | Adele | |
| 7 November | |||
| 14 November | |||
| 21 November | "10.000 luchtballonnen" | K3 | |
| 28 November | "Hello" | Adele | |
| 5 December | |||
| 12 December | |||
| 19 December | |||
| 26 December | |||
| Position | Artist | Weeks #1 | |
|---|---|---|---|
| 1 | 9 | ||
| 2 | 8 | ||
| 2 | 8 | ||
| 3 | 6 | ||
| 4 | 5 | ||
| 4 | 5 | ||
| 4 | 5 | ||
| 4 | 5 | ||
| 5 | 4 | ||
| 6 | 3 | ||
| 6 | 3 | ||
| 6 | 3 | ||
| 6 | 3 | ||
| 6 | 3 | ||
| 7 | 1 | ||
| 7 | 1 |
| Wallonia | |||
|---|---|---|---|
| Issue date | Song | Artist | |
| 3 January | "Dangerous" | David Guetta featuring Sam Martin | |
| 10 January | "Uptown Funk" | Mark Ronson featuring Bruno Mars | |
| 17 January | |||
| 24 January | |||
| 31 January | |||
| 7 February | |||
| 14 February | |||
| 21 February | "Christine" | Christine and the Queens | |
| 28 February | |||
| 7 March | |||
| 14 March | |||
| 21 March | |||
| 28 March | "Cheerleader" (Felix Jaehn remix) | OMI | |
| 4 April | |||
| 11 April | |||
| 18 April | |||
| 25 April | |||
| 2 May | |||
| 9 May | |||
| 16 May | "Easy Come Easy Go" | Alice on the roof | |
| 23 May | "Goodbye" | Feder featuring Lyse | |
| 30 May | "Rhythm Inside" | ||
| 6 June | |||
| 13 June | "Goodbye" | Feder featuring Lyse | |
| 20 June | |||
| 27 June | "Homeless" | Marina Kaye | |
| 4 July | |||
| 11 July | "Goodbye" | Feder featuring Lyse | |
| 18 July | "Reality" | Lost Frequencies featuring Janieck Devy | |
| 25 July | |||
| 1 August | |||
| 8 August | |||
| 15 August | |||
| 22 August | "El Perdón" | Nicky Jam featuring Enrique Iglesias | |
| 29 August | |||
| 5 September | "Stolen Car" | Mylène Farmer & Sting | |
| 12 September | "El Perdón" | Nicky Jam feat. Enrique Iglesias | |
| 19 September | "How Deep Is Your Love" | Calvin Harris & Disciples | |
| 26 September | |||
| 3 October | |||
| 10 October | |||
| 17 October | "Catch & Release" | Matt Simons | |
| 24 October | |||
| 31 October | "Hello" | Adele | |
| 7 November | |||
| 14 November | |||
| 21 November | |||
| 28 November | |||
| 5 December | |||
| 12 December | |||
| 19 December | |||
| 26 December | |||
| Position | Artist | Weeks #1 | |
|---|---|---|---|
| 1 | 9 | ||
| 2 | 7 | ||
| 3 | 6 | ||
| 3 | 6 | ||
| 4 | 5 | ||
| 4 | 5 | ||
| 4 | 5 | ||
| 5 | 4 | ||
| 5 | Disciples | 4 | |
| 5 | 4 | ||
| 5 | Lyse | 4 | |
| 6 | 3 | ||
| 6 | 3 | ||
| 7 | 2 | ||
| 7 | 2 | ||
| 7 | 2 | ||
| 8 | 1 | ||
| 8 | 1 | ||
| 8 | Alice on the roof | 1 | |
| 8 | 1 | ||
| 8 | 1 |