These are the Billboard magazine's number-one dance songs of 2003 on the Dance Club Songs, the Dance Singles Sales, and the Dance/Mix Show Airplay.
The Hot Dance Club Songs was first published in 1976, ranking the most popular songs on dance club based on reports from a national sample of club DJs.
The Dance/Mix Show Airplay was first published in 2003, ranking the songs based on dance radio airplay and mix-show plays on top 40 radio and select rhythmic radio as measured by Mediabase.
The chart was unpublished for the first ten weeks and featured 40 titles (it was on its eleventh week when it was included in Billboard's print and online editions), which means that its unofficial start date was August 16, 2003 (the unpublished chart and data would be included in 2018 after Billboard updated the website).
[55] Billboard made the chart listing official on October 25, 2003, with 25 titles, which would last until December 2014 when it returned to 40 titles.