List of number-one hits of 2003 (Austria)
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{{Use dmy dates|date=February 2021}}
This is a list of the Austrian Singles Chart number-one hits of 2003.[http://www.austriancharts.at/archiv.asp Archives on "Austriancharts.at"]
| class=wikitable
! Issue date !! Song !! Artist | ||
| 5 January | "Der Steuersong (Las Kanzlern)" | Die Gerd-Show |
| 12 January | rowspan=3 | "Lose Yourself" | rowspan=3 | Eminem |
| 19 January | ||
| 26 January | ||
| 2 February | rowspan=5 | "All the Things She Said" | rowspan=5 | t.A.T.u. |
| 9 February | ||
| 16 February | ||
| 23 February | ||
| 2 March | ||
| 9 March | rowspan=2 | "Tomorrow's Heroes" | rowspan=2 | Starmaniacs |
| 16 March | ||
| 23 March | rowspan=2 | "Tears of Happiness" | rowspan=2 | Michael Tschuggnall |
| 30 March | ||
| 6 April | rowspan=9 | "Ich lebe" | rowspan=9 | Christina Stürmer |
| 13 April | ||
| 20 April | ||
| 27 April | ||
| 4 May | ||
| 11 May | ||
| 18 May | ||
| 25 May | ||
| 1 June | ||
| 8 June | rowspan=2 | "Für dich" | rowspan=2 | Yvonne Catterfeld |
| 15 June | ||
| 22 June | "Anyplace, Anywhere, Anytime" | Nena and Kim Wilde |
| 29 June | "Für dich" | Yvonne Catterfeld |
| 6 July | rowspan=12 | "Ab in den Süden" | rowspan=12 | Buddy vs. DJ the Wave |
| 13 July | ||
| 20 July | ||
| 27 July | ||
| 3 August | ||
| 10 August | ||
| 17 August | ||
| 24 August | ||
| 31 August | ||
| 7 September | ||
| 14 September | ||
| 21 September | ||
| 28 September | "Maria (I Like It Loud)" | Scooter |
| 5 October | rowspan=3 | "White Flag" | rowspan=3 | Dido |
| 12 October | ||
| 19 October | ||
| 26 October | rowspan=4 | "Where Is the Love?" | rowspan=4 | The Black Eyed Peas |
| 2 November | ||
| 9 November | ||
| 16 November | ||
| 23 November | "Schick mir 'nen Engel" | Overground |
| 30 November | rowspan=5 | "Mama (Ana Ahabak)" | rowspan=5 | Christina Stürmer |
| 7 December | ||
| 14 December | ||
| 21 December | ||
| 28 December |