List of number-one dance singles of 1975 (U.S.)
# List of number-one dance singles of 1975 (U.S.)

These are the Billboard magazine Hot Dance Club Play number one hits of 1975.

Note: Billboard magazine's dance/disco chart, which began in 1974 and ranked the popularity of tracks in New York City discothèques, expanded to feature multiple charts each week which highlighted playlists in various cities such as San Francisco, Los Angeles, Miami, Chicago, Boston, Phoenix, Detroit and Houston. During this time, Billboard rival publication Record World was the first to compile a dance chart which incorporated club play on a national level. Noted Billboard statistician Joel Whitburn has since "adopted" Record World chart data from the weeks between March 29, 1975 and August 21, 1976 into Billboards club play history. For the sake of continuity, Record World national charts are incorporated into the 1975 and 1976 lists.

With the issue dated August 28, 1976, Billboard premièred its own national chart ("National Disco Action Top 30") and their data is used from this date forward.

| Issue date | Song | Artist |
| - | - | - |
| Billboard Disco Action data |||
| January 4 | "I'll Be Holding On" | Al Downing |
| January 11 | "I'll Be Holding On" | Al Downing |
| January 18 | "Shame, Shame, Shame" | Shirley & Company |
| January 25 | "Shame, Shame, Shame" | Shirley & Company |
| February 1 | "Shame, Shame, Shame" | Shirley & Company |
| February 8 | "Shame, Shame, Shame" | Shirley & Company |
| February 15 | "Hijack" | Herbie Mann |
| February 22 | "Hijack" | Herbie Mann |
| March 1 | "Hijack" | Herbie Mann |
| March 8 | "Bad Luck" | Harold Melvin & the Blue Notes |
| March 15 | "Bad Luck" | Harold Melvin & the Blue Notes |
| March 22 | "Bad Luck" | Harold Melvin & the Blue Notes |
| Record World disco chart data |||
| March 29 | "Bad Luck" | Harold Melvin & the Blue Notes |
| April 5 | "Bad Luck" | Harold Melvin & the Blue Notes |
| April 12 | "Bad Luck" | Harold Melvin & the Blue Notes |
| April 19 | "Bad Luck" | Harold Melvin & the Blue Notes |
| April 26 | "Bad Luck" | Harold Melvin & the Blue Notes |
| May 3 | "Bad Luck" | Harold Melvin & the Blue Notes |
| May 10 | "Bad Luck" | Harold Melvin & the Blue Notes |
| May 17 | "Bad Luck" | Harold Melvin & the Blue Notes |
| May 24 | "Ease on Down the Road" | Consumer Rapport |
| May 31 | "Ease on Down the Road" | Consumer Rapport |
| June 7 | "Ease on Down the Road" | Consumer Rapport |
| June 14 | "Ease on Down the Road" | Consumer Rapport |
| June 21 | "Free Man" | South Shore Commission |
| June 28 | "Ease on Down the Road" | Consumer Rapport |
| July 5 | "Forever Came Today" | The Jackson 5 |
| July 12 | "Forever Came Today" | The Jackson 5 |
| July 19 | "Forever Came Today" | The Jackson 5 |
| July 26 | "Dreaming a Dream" | Crown Heights Affair |
| August 2 | "Forever Came Today" | The Jackson 5 |
| August 9 | "Brazil" | The Ritchie Family |
| August 16 | "Brazil" | The Ritchie Family |
| August 23 | "Brazil" | The Ritchie Family |
| August 30 | "Brazil" | The Ritchie Family |
| September 6 | "Brazil" | The Ritchie Family |
| September 13 | "Brazil" | The Ritchie Family |
| September 20 | "Brazil" | The Ritchie Family |
| September 27 | "Fly, Robin, Fly" | Silver Convention |
| October 4 | "Fly, Robin, Fly" | Silver Convention |
| October 11 | "Fly, Robin, Fly" | Silver Convention |
| October 18 | "Casanova Brown"/ "(If You Want It) Do It Yourself"/ "How High the Moon" | Gloria Gaynor |
| October 25 | "Love to Love You Baby" | Donna Summer |
| November 1 | "Love to Love You Baby" | Donna Summer |
| November 8 | "Love to Love You Baby" | Donna Summer |
| November 15 | "Love to Love You Baby" | Donna Summer |
| November 22 | "I Love Music" | The O'Jays |
| November 29 | "I Love Music" | The O'Jays |
| December 6 | "I Love Music" | The O'Jays |
| December 13 | "I Love Music" | The O'Jays |
| December 20 | "I Love Music" | The O'Jays |
| December 27 | "I Love Music" | The O'Jays |
