Nummer 1-hits in de Billboard Hot 100 in 1999
Deze hits stonden in 1999 op nummer 1 in de Billboard Hot 100.
| Datum | Artiest | Titel |
|---|---|---|
| 2 januari |  .svg){kind=small} R. Kelly & Céline Dion |
I'm your angel |
| 9 januari | R. Kelly & Céline Dion |
I'm your angel |
| 16 januari | Brandy |
Have you ever? |
| 23 januari | Brandy |
Have you ever? |
| 30 januari | Britney Spears |
...Baby one more time |
| 6 februari | Britney Spears |
...Baby one more time |
| 13 februari | Monica |
Angel of mine |
| 20 februari | Monica |
Angel of mine |
| 27 februari | Monica |
Angel of mine |
| 6 maart | Monica |
Angel of mine |
| 13 maart | Cher |
Believe |
| 20 maart | Cher |
Believe |
| 27 maart | Cher |
Believe |
| 3 april | Cher |
Believe |
| 10 april | TLC |
No scrubs |
| 17 april | TLC |
No scrubs |
| 24 april | TLC |
No scrubs |
| 1 mei | TLC |
No scrubs |
| 8 mei |  Ricky Martin |
Livin' la vida loca |
| 15 mei | Ricky Martin |
Livin' la vida loca |
| 22 mei | Ricky Martin |
Livin' la vida loca |
| 29 mei | Ricky Martin |
Livin' la vida loca |
| 5 juni | Ricky Martin |
Livin' la vida loca |
| 12 juni | Jennifer Lopez |
If you had my love |
| 19 juni | Jennifer Lopez |
If you had my love |
| 26 juni | Jennifer Lopez |
If you had my love |
| 3 juli | Jennifer Lopez |
If you had my love |
| 10 juli | Jennifer Lopez |
If you had my love |
| 17 juli | Destiny's Child |
Bills, bills, bills |
| 24 juli | Will Smith & Dru Hill & Kool Moe Dee |
Wild wild West |
| 31 juli | Christina Aguilera |
Genie in a bottle |
| 7 augustus | Christina Aguilera |
Genie in a bottle |
| 14 augustus | Christina Aguilera |
Genie in a bottle |
| 21 augustus | Christina Aguilera |
Genie in a bottle |
| 28 augustus | Christina Aguilera |
Genie in a bottle |
| 4 september |  Enrique Iglesias |
Bailamos |
| 11 september | Enrique Iglesias |
Bailamos |
| 18 september | TLC |
Unpretty |
| 25 september | TLC |
Unpretty |
| 2 oktober | TLC |
Unpretty |
| 9 oktober | Mariah Carey & Jay-Z |
Heartbreaker |
| 16 oktober | Mariah Carey & Jay-Z |
Heartbreaker |
| 23 oktober |  Santana & Rob Thomas |
Smooth |
| 30 oktober | Santana & Rob Thomas |
Smooth |
| 6 november | Santana & Rob Thomas |
Smooth |
| 13 november | Santana & Rob Thomas |
Smooth |
| 20 november | Santana & Rob Thomas |
Smooth |
| 27 november | Santana & Rob Thomas |
Smooth |
| 4 december | Santana & Rob Thomas |
Smooth |
| 11 december | Santana & Rob Thomas |
Smooth |
| 18 december | Santana & Rob Thomas |
Smooth |
| 25 december | Santana & Rob Thomas |
Smooth |
· 
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