| Issue Date | Song | Artist(s) |
|---|---|---|
| January 5 | "I'd Love You to Want Me" | Lobo |
| January 12 | ||
| January 19 | ||
| January 25 | ||
| February 2 | "Nutbush City Limits" | Ike & Tina Turner |
| February 9 | ||
| February 16 | ||
| February 23 | ||
| March 2 | ||
| March 9 | "Goodbye Yellow Brick Road" | Elton John |
| March 16 | ||
| March 23 | ||
| March 30 | "Dark Lady" | Cher |
| April 6 | ||
| April 13 | "Waterloo" ‡ | ABBA |
| April 20 | ||
| April 27 | ||
| May 4 | ||
| May 11 | ||
| May 18 | ||
| May 25 | ||
| June 1 | ||
| June 8 | "Seasons in the Sun" † | Terry Jacks |
| June 15 | ||
| June 22 | ||
| June 29 | ||
| July 6 | ||
| July 13 | ||
| July 20 | ||
| July 27 | ||
| August 3 | "Sugar Baby Love" | The Rubettes |
| August 10 | ||
| August 17 | ||
| August 24 | ||
| August 31 | ||
| September 7 | ||
| September 14 | "Rock Your Baby" | George McCrae |
| September 21 | ||
| September 28 | ||
| October 5 | ||
| October 12 | ||
| October 19 | "Gigi l'Amoroso" | Dalida |
| October 26 | ||
| November 2 | ||
| November 9 | ||
| November 16 | "I Honestly Love You" | Olivia Newton-John |
| November 23 | ||
| November 30 | ||
| December 7 | "Manuela" | Julio Iglesias |
| December 14 | ||
| December 21 | ||
| December 28 |
