| Now That's What I Call Music! 40 | 
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| Compilation album by various artists | 
| Released | 2005 | 
| Length |  | 
| Label |  | 
| Series chronology | 
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Now That's What I Call Music 40 is the fortieth album of the Now South Africa series. It was released in 2005.
Track listing[edit]
| No. | Artist | Title | 
| 1 | Gwen Stefani | Rich Girl |  | 
| 2 | Akon | Lonely |  | 
| 3 | Coldplay | Speed of Sound |  | 
| 4 | Backstreet Boys | Incomplete |  | 
| 5 | Natalie Imbruglia | Shiver |  | 
| 6 | The Black Eyed Peas | Don't Phunk with My Heart |  | 
| 7 | Bodyrockers | I Like the Way (You Move) |  | 
| 8 | Mariah Carey | It's Like That |  | 
| 9 | Mario | Let Me Love You |  | 
| 10 | Will Smith | Switch |  | 
| 11 | Blue feat. 'Lil Kim | Get Down on It |  | 
| 12 | Avril Lavigne | Fall to Pieces |  | 
| 13 | Gorillaz | Feel Good Inc. |  | 
| 14 | Maroon 5 | Must Get Out |  | 
| 15 | Lebo | I Love Music |  | 
| 16 | Usher | Caught Up |  | 
| 17 | Jay Sean | Eyes on You |  | 
| 18 | Kylie Minogue | Giving You Up |  | 
| 19 | Westlife | I Won't Let You Down |  | 
| 20 | Freshlyground | Doo be Doo |  | 
| 21 | Nelly feat. Tim McGraw | Over and Over |  |