# List of number-one singles of 2003 (Australia)

The Australian Top 100 Singles Chart is a chart that ranks the best-performing singles in Australia. Published by the ARIA report, the data is compiled by the Australian Recording Industry Association (ARIA) based collectively on each single's weekly physical sales. digital sales and airplay.

## Chart history

Key :
* The yellow background indicates the #1 song on ARIA's Years End Singles Chart of 2003.
Songs reaching No. 1, with artists, listed by chart week :
| Week beginning | Song | Artist |
| 5 January | "Lose Yourself" | Eminem |
| 12 January | "Lose Yourself" | Eminem |
| 19 January | "Lose Yourself" | Eminem |
| 26 January | "Lose Yourself" | Eminem |
| 2 February | "Lose Yourself" | Eminem |
| 9 February | "Lose Yourself" | Eminem |
| 16 February | "Lose Yourself" | Eminem |
| 23 February | "Lose Yourself" | Eminem |
| 2 March | "Beautiful" | Christina Aguilera |
| 9 March | "Lost Without You" | Delta Goodrem |
| 16 March | "All the Things She Said" | t.A.T.u. |
| 23 March | "Lost Without You" | Delta Goodrem |
| 30 March | "All the Things She Said" | t.A.T.u. |
| 6 April | "In da Club" | 50 Cent |
| 13 April | "In da Club" | 50 Cent |
| 20 April | "In da Club" | 50 Cent |
| 27 April | "In da Club" | 50 Cent |
| 4 May | "In da Club" | 50 Cent |
| 11 May | "Rock Your Body" | Justin Timberlake |
| 18 May | "Bring Me to Life" | Evanescence featuring Paul McCoy |
| 25 May | "Bring Me to Life" | Evanescence featuring Paul McCoy |
| 1 June | "Bring Me to Life" | Evanescence featuring Paul McCoy |
| 8 June | "Bring Me to Life" | Evanescence featuring Paul McCoy |
| 15 June | "Bring Me to Life" | Evanescence featuring Paul McCoy |
| 22 June | "Bring Me to Life" | Evanescence featuring Paul McCoy |
| 29 June | "Innocent Eyes" | Delta Goodrem |
| 6 July | "Innocent Eyes" | Delta Goodrem |
| 13 July | "Ignition" (Remix) | R. Kelly |
| 20 July | "Ignition" (Remix) | R. Kelly |
| 27 July | "Ignition" (Remix) | R. Kelly |
| 3 August | "Ignition" (Remix) | R. Kelly |
| 10 August | "Ignition" (Remix) | R. Kelly |
| 17 August | "Ignition" (Remix) | R. Kelly |
| 24 August | "Where Is the Love?" | The Black Eyed Peas featuring Justin Timberlake |
| 31 August | "Where Is the Love?" | The Black Eyed Peas featuring Justin Timberlake |
| 7 September | "Where Is the Love?" | The Black Eyed Peas featuring Justin Timberlake |
| 14 September | "Where Is the Love?" | The Black Eyed Peas featuring Justin Timberlake |
| 21 September | "White Flag" | Dido |
| 28 September | "Not Me, Not I" | Delta Goodrem |
| 5 October | "Where Is the Love?" | The Black Eyed Peas featuring Justin Timberlake |
| 12 October | "Where Is the Love?" | The Black Eyed Peas featuring Justin Timberlake |
| 19 October | "Rise Up" | Australian Idol Final 12 |
| 26 October | "Rise Up" | Australian Idol Final 12 |
| 2 November | "Rise Up" | Australian Idol Final 12 |
| 9 November | "Slow" | Kylie Minogue |
| 16 November | "Me Against the Music" | Britney Spears featuring Madonna |
| 23 November | "Me Against the Music" | Britney Spears featuring Madonna |
| 30 November | "Angels Brought Me Here" | Guy Sebastian |
| 7 December | "Angels Brought Me Here" | Guy Sebastian |
| 14 December | "Angels Brought Me Here" | Guy Sebastian |
| 21 December | "Predictable"/"Happy Xmas (War Is Over)" | Delta Goodrem |
| 28 December | "Shut Up" | The Black Eyed Peas |