This is a list of number one singles on the Billboard Brazil Hot 100 chart in 2009. Note that Billboard publishes a monthly chart. The first number-one single on the chart was "Halo" by Beyoncé.
Chart history edit
| Issue date | Song | Artist(s) |
|---|---|---|
| October | "Halo" | Beyoncé |
| November | ||
| December | "I Want to Know What Love Is" | Mariah Carey |