This is a list of the Austrian Singles Chart number-one hits of 1999.[1]
| Issue date | Song | Artist | |
|---|---|---|---|
| 3 January | "Big Big World" | Emilia | |
| 10 January | |||
| 17 January | |||
| 24 January | |||
| 31 January | "Narcotic" | Liquido | |
| 7 February | |||
| 14 February | |||
| 21 February | |||
| 28 February | "A klana Indiana" | A klana Indiana | |
| 7 March | |||
| 14 March | |||
| 21 March | "...Baby One More Time" | Britney Spears | |
| 28 March | |||
| 4 April | |||
| 11 April | |||
| 18 April | |||
| 25 April | |||
| 2 May | |||
| 9 May | |||
| 16 May | "I Want It That Way" | Backstreet Boys | |
| 23 May | |||
| 30 May | |||
| 6 June | "Uiii, is des bled | " | A klana Indiana |
| 13 June | |||
| 20 June | "Mambo No. 5" | Lou Bega | |
| 27 June | |||
| 4 July | |||
| 11 July | |||
| 18 July | |||
| 25 July | |||
| 1 August | |||
| 8 August | |||
| 15 August | |||
| 22 August | |||
| 29 August | "Blue (Da Ba Dee)" | Eiffel 65 | |
| 5 September | |||
| 12 September | |||
| 19 September | |||
| 26 September | |||
| 3 October | |||
| 10 October | "Genie in a Bottle" | Christina Aguilera | |
| 17 October | |||
| 24 October | |||
| 31 October | |||
| 7 November | "Vater unser" | E Nomine | |
| 14 November | |||
| 21 November | |||
| 28 November | "So bist du (und wenn Du gehst...)" | Oli.P | |
| 5 December | |||
| 12 December | |||
| 19 December | "Maschen-Draht-Zaun" | Stefan Raab | |
| 26 December |