| Top 40 Hits of September 1999 |
| 1 |
Lou Bega | Mambo No 5 (A Little Bit Of...) |
| 2 |
Eiffel 65 | Blue (Da Ba Dee) |
| 3 |
DJ Jean | The Launch |
| 4 |
Vengaboys | We're Going To Ibiza! |
| 5 |
Shaft | (Mucho Mambo) Sway |
| 6 |
Enrique Iglesias | Bailamos |
| 7 |
Lolly | Mickey |
| 8 |
Martine McCutcheon | I've Got You |
| 9 |
Bob Marley vs Funkstar De Luxe | Sun Is Shining |
| 10 |
DJ Jurgen presents Alice Deejay | Better Off Alone |
| 11 |
Geri Halliwell | Mi Chico Latino |
| 12 |
Thunderbugs | Friends Forever |
| 13 |
S Club 7 | S Club Party |
| 14 |
Moloko | Sing It Back |
| 15 |
TLC | Unpretty |
| 16 |
Paul Johnson | Get Get Down |
| 17 |
A1 | Summertime Of Our Lives |
| 18 |
Tom Jones & The Cardigans | Burning Down The House |
| 19 |
Westlife | If I Let You Go |
| 20 |
Leftfield / Afrika Bambaataa | Afrika Shox |
| 21 |
Shania Twain | Man! I Feel Like A Woman! |
| 22 |
Ricky Martin | Livin' La Vida Loca |
| 23 |
Supergrass | Moving |
| 24 |
Bran Van 3000 | Drinking In LA |
| 25 |
Offspring | The Kids Aren't Alright |
| 26 |
Britney Spears | (You Drive Me) Crazy |
| 27 |
Ronan Keating | When You Say Nothing At All |
| 28 |
Fragma | Toca Me |
| 29 |
Sting | Brand New Day |
| 30 |
Lyte Funkie Ones | Summer Girls |
| 31 |
Another Level featuring TQ | Summertime |
| 32 |
Sixpence None The Richer | There She Goes |
| 33 |
Texas | Summer Son |
| 34 |
Will Smith featuring Dru Hill | Wild Wild West |
| 35 |
Ocean Colour Scene | Profit In Peace |
| 36 |
Agnelli & Nelson | Everyday |
| 37 |
Binary Finary | 1999 |
| 38 |
Gomez | Rhythm & Blues Alibi |
| 39 |
A*Teens | Mamma Mia |
| 40 |
Kelle Bryan | Higher Than Heaven |
