# List of number-one singles of 2005 (Australia)

These are the number-one songs of 2005 in the Australian ARIA singles chart.

## Chart history

Key :
* The yellow background indicates the #1 song on ARIA's End of Year Singles Chart of 2005.
Songs reaching No. 1, with artists, listed by chart week :
| Week beginning | Song | Artist |
| 2 January | "The Prayer" | Anthony Callea |
| 9 January | "The Prayer" | Anthony Callea |
| 16 January | "The Prayer" | Anthony Callea |
| 23 January | "Nasty Girl" | Nitty |
| 30 January | "Nasty Girl" | Nitty |
| 6 February | "Over and Over" | Nelly featuring Tim McGraw |
| 13 February | "Over and Over" | Nelly featuring Tim McGraw |
| 20 February | "Over and Over" | Nelly featuring Tim McGraw |
| 27 February | "Over and Over" | Nelly featuring Tim McGraw |
| 6 March | "Over and Over" | Nelly featuring Tim McGraw |
| 13 March | "Almost Here" | Brian McFadden and Delta Goodrem |
| 20 March | "Rain"/"Bridge over Troubled Water" | Anthony Callea |
| 27 March | "Rain"/"Bridge over Troubled Water" | Anthony Callea |
| 3 April | "Beautiful Soul" | Jesse McCartney |
| 10 April | "Beautiful Soul" | Jesse McCartney |
| 17 April | "Beautiful Soul" | Jesse McCartney |
| 24 April | "Beautiful Soul" | Jesse McCartney |
| 1 May | "Signs" | Snoop Dogg featuring Justin Timberlake and Charlie Wilson |
| 8 May | "Signs" | Snoop Dogg featuring Justin Timberlake and Charlie Wilson |
| 15 May | "Switch" | Will Smith |
| 22 May | "Don't Phunk with My Heart" | The Black Eyed Peas |
| 29 May | "Hollaback Girl" | Gwen Stefani |
| 5 June | "Don't Phunk with My Heart" | Black Eyed Peas |
| 12 June | "Don't Phunk with My Heart" | Black Eyed Peas |
| 19 June | "Incomplete" | Backstreet Boys |
| 26 June | "We Belong Together" | Mariah Carey |
| 3 July | "We Belong Together" | Mariah Carey |
| 10 July | "Lonely" | Akon |
| 17 July | "Lonely" | Akon |
| 24 July | "Axel F" | Crazy Frog |
| 31 July | "Axel F" | Crazy Frog |
| 7 August | "Axel F" | Crazy Frog |
| 14 August | "Lonely" | Akon |
| 21 August | "Ghetto Gospel" | 2Pac featuring Elton John |
| 28 August | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| 4 September | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| 11 September | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| 18 September | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| 25 September | "Don't Cha" | The Pussycat Dolls featuring Busta Rhymes |
| 2 October | "Shine" | Shannon Noll |
| 9 October | "Don't Cha" | Pussycat Dolls featuring Busta Rhymes |
| 16 October | "Don't Cha" | Pussycat Dolls featuring Busta Rhymes |
| 23 October | "Gold Digger" | Kanye West featuring Jamie Foxx |
| 30 October | "Gold Digger" | Kanye West featuring Jamie Foxx |
| 6 November | "Gold Digger" | Kanye West featuring Jamie Foxx |
| 13 November | "Hung Up" | Madonna |
| 20 November | "My Humps" | The Black Eyed Peas |
| 27 November | "My Humps" | The Black Eyed Peas |
| 4 December | "Maybe Tonight" | Kate DeAraugo |
| 11 December | "Maybe Tonight" | Kate DeAraugo |
| 18 December | "Wasabi"/"Eye of the Tiger" | Lee Harding |
| 25 December | "Wasabi"/"Eye of the Tiger" | Lee Harding |

## Number-one artists

| Position | Artist | Weeks #1 |
| 1 | Pussycat Dolls | 7 |
| 1 | Busta Rhymes (as featuring) | 7 |
| 2 | Anthony Callea | 5 |
| 2 | Nelly | 5 |
| 2 | Tim McGraw (as featuring) | 5 |
| 2 | The Black Eyed Peas | 5 |
| 3 | Jesse McCartney | 4 |
| 4 | Akon | 3 |
| 4 | Crazy Frog | 3 |
| 4 | Kanye West | 3 |
| 4 | Jamie Foxx (as featuring) | 3 |
| 5 | Nitty | 2 |
| 5 | Snoop Dogg | 2 |
| 5 | Justin Timberlake (as featuring) | 2 |
| 5 | Charlie Wilson (as featuring) | 2 |
| 5 | Mariah Carey | 2 |
| 5 | Kate DeAraugo | 2 |
| 5 | Lee Harding | 2 |
| 6 | Brian McFadden | 1 |
| 6 | Delta Goodrem | 1 |
| 6 | Will Smith | 1 |
| 6 | Gwen Stefani | 1 |
| 6 | Backstreet Boys | 1 |
| 6 | 2Pac | 1 |
| 6 | Elton John (as featuring) | 1 |
| 6 | Shannon Noll | 1 |
| 6 | Madonna | 1 |