List of Billboard number-one dance singles of 2005

Billboard magazine compiled the top-performing dance singles in the United States during 2005 on the Hot Dance Club Play, the Hot Dance Singles Sales, and the Hot Dance Radio Airplay. Premiered in 1976, the Hot Dance Club Play chart ranked the most-played singles on dance club based on reports from a national sample of club DJs. The Hot Dance Singles Sales chart was launched in 1985 to compile the best-selling dance singles based on retail sales across the United States. The Hot Dance Radio Airplay was first published in 2003, ranking the songs based on airplay detections on dance radio.