These hits topped the Ultratop 50 in 2019.[1]
| Flanders | | Issue date | Song | Artist | | 5 January | "Sweet but Psycho" | Ava Max | | 12 January | | 19 January | | 26 January | | 2 February | | 9 February | | 16 February | | 23 February | | 2 March | | 9 March | | 16 March | "Giant" | Calvin Harris and Rag'n'Bone Man | | 23 March | | 30 March | | 6 April | | 13 April | | 20 April | | 27 April | | 4 May | "Old Town Road" | Lil Nas X | | 11 May | | 18 May | | 25 May | | 1 June | | 8 June | | 15 June | | 22 June | | 29 June | | 6 July | | 13 July | | 20 July | "Hoe het danst" | Marco Borsato, Armin van Buuren and Davina Michelle | | 27 July | | 3 August | | 10 August | | 17 August | | 24 August | | 31 August | | 7 September | | 14 September | | 21 September | | 28 September | "Dance Monkey" | Tones and I | | 5 October | | 12 October | | 19 October | | 26 October | | 2 November | | 9 November | | 16 November | | 23 November | | 30 November | | 7 December | | 14 December | | 21 December | | 28 December |
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