These hits topped the Ultratop 50 in 2017.[1]
| Flanders | |||
|---|---|---|---|
| Issue date | Song | Artist | |
| 7 January | "24K Magic" | Bruno Mars | |
| 14 January | "Hey Baby" | Dimitri Vegas & Like Mike vs. Diplo featuring Deb's Daughter | |
| 21 January | "Shape of You" | Ed Sheeran | |
| 28 January | |||
| 4 February | |||
| 11 February | |||
| 18 February | |||
| 25 February | |||
| 4 March | |||
| 11 March | |||
| 18 March | |||
| 25 March | |||
| 1 April | |||
| 8 April | |||
| 15 April | |||
| 22 April | |||
| 29 April | "Something Just Like This" | The Chainsmokers featuring Coldplay | |
| 6 May | "Shape of You" | Ed Sheeran | |
| 13 May | "Something Just Like This" | The Chainsmokers featuring Coldplay | |
| 20 May | "City Lights" | Blanche | |
| 27 May | |||
| 3 June | "Despacito" | Luis Fonsi featuring Daddy Yankee | |
| 10 June | |||
| 17 June | |||
| 24 June | |||
| 1 July | |||
| 8 July | |||
| 15 July | |||
| 22 July | |||
| 29 July | |||
| 5 August | |||
| 12 August | |||
| 19 August | |||
| 26 August | "Where Did You Go (Summer Love)" | Regi | |
| 2 September | |||
| 9 September | |||
| 16 September | |||
| 23 September | "New Rules" | Dua Lipa | |
| 30 September | |||
| 7 October | "Perfect" | Ed Sheeran | |
| 14 October | "New Rules" | Dua Lipa | |
| 21 October | |||
| 28 October | |||
| 4 November | "Perfect" (including "Perfect Duet" and "Perfect Symphony") | Ed Sheeran (with Beyoncé / with Andrea Bocelli) | |
| 11 November | |||
| 18 November | |||
| 25 November | |||
| 2 December | |||
| 9 December | |||
| 16 December | |||
| 23 December | |||
| 30 December | |||
| Wallonia | |||
|---|---|---|---|
| Issue date | Song | Artist | |
| 7 January | "Human" | Rag'n'Bone Man | |
| 14 January | "Rockabye" | Clean Bandit featuring Sean Paul and Anne-Marie | |
| 21 January | |||
| 28 January | |||
| 4 February | "Shape of You" | Ed Sheeran | |
| 11 February | |||
| 18 February | |||
| 25 February | |||
| 4 March | |||
| 11 March | |||
| 18 March | |||
| 25 March | |||
| 1 April | |||
| 8 April | |||
| 15 April | |||
| 22 April | |||
| 29 April | |||
| 6 May | |||
| 13 May | |||
| 20 May | "Despacito" | Luis Fonsi featuring Daddy Yankee | |
| 27 May | |||
| 3 June | |||
| 10 June | |||
| 17 June | |||
| 24 June | |||
| 1 July | |||
| 8 July | |||
| 15 July | |||
| 22 July | |||
| 29 July | |||
| 5 August | |||
| 12 August | |||
| 19 August | |||
| 26 August | |||
| 2 September | "Feels" | Calvin Harris featuring Pharrell Williams, Katy Perry and Big Sean | |
| 9 September | |||
| 16 September | |||
| 23 September | |||
| 30 September | |||
| 7 October | "Réseaux" | Niska | |
| 14 October | |||
| 21 October | |||
| 28 October | "Mwaka Moon" | Kalash featuring Damso | |
| 4 November | |||
| 11 November | |||
| 18 November | "Perfect" (including "Perfect Duet" and "Perfect Symphony") | Ed Sheeran (with Beyoncé / with Andrea Bocelli) | |
| 25 November | |||
| 2 December | |||
| 9 December | |||
| 16 December | |||
| 23 December | |||
| 30 December | |||
| Position | Artist | Weeks #1 | +Flanders Ranking of most weeks at number 1 |
|---|---|---|---|
| 1 | 25 | ||
| 2 | 12 | ||
| 2 | 12 | ||
| 2 | 12 | ||
| 3 | 6 | ||
| 4 | 4 | ||
| 4 | 4 | ||
| 5 | 2 | ||
| 5 | 2 | ||
| 5 | 2 | ||
| 6 | 2 | ||
| 6 | 1 | ||
| 6 | 1 | ||
| 6 | 1 | ||
| 6 | Deb's Daughter | 1 |
| Position | Artist | Weeks #1 | +Wallonia Ranking of most weeks at number 1 |
|---|---|---|---|
| 1 | 22 | ||
| 2 | 15 | ||
| 2 | 15 | ||
| 2 | 15 | ||
| 3 | 5 | ||
| 3 | 5 | ||
| 3 | 5 | ||
| 3 | 5 | ||
| 4 | 4 | ||
| 5 | 3 | ||
| 5 | 3 | ||
| 5 | 3 | ||
| 5 | 3 | ||
| 5 | 3 | ||
| 5 | 3 | ||
| 6 | 2 | ||
| 7 | 1 |