Lists of Hot 100 number-one singles of 2009

Lists of Hot 100 number-one singles of 2009 are lists of singles released in 2009 as ranked by Billboard magazine in the United States and associated magazines in other countries.

Lists

 * List of Billboard Hot 100 number-one singles of 2009
 * List of Hot 100 number-one singles of 2009 (Japan)
 * List of Canadian Hot 100 number-one singles of 2009
 * List of Hot 100 number-one singles of 2009 (Brazil)