List of Rhythmic Top 40 number-one singles of 2004 (U.S.)
- Kelis - Milkshake 5 weeks (December 27, 2003 - 30 January 2004)
- 3 weeks ( January 31-February 20 )
- 2 weeks ( May 8 to May 21 )
- 4 weeks ( May 29-June 25 )
- 3 weeks ( June 26 to July 16 )
- 5 weeks ( July 17 to August 20 )
- 7 weeks ( September 4 to October 22 )
- 4 weeks ( 23 October to 19 November )
- 5 weeks ( November 27 to December 31 )