List of Billboard Hot 100 number ones of 2009

The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. Published by Billboard magazine, the data are compiled by Nielsen SoundScan based collectively on each single's weekly physical and digital sales, and airplay. There were a total of 12 number-one singles in 2009, although 13 claimed the top spot as Beyoncé's "Single Ladies (Put a Ring on It)" reached its peak position in 2008, and thus is excluded.

List of Billboard Hot 100 number ones of 2009

The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. Published by Billboard magazine, the data are compiled by Nielsen SoundScan based collectively on each single's weekly physical and digital sales, and airplay. There were a total of 12 number-one singles in 2009, although 13 claimed the top spot as Beyoncé's "Single Ladies (Put a Ring on It)" reached its peak position in 2008, and thus is excluded.