These are the Billboard Hot 100 number one hits of 1979.
| Issue Date | Song | Artist(s) | Reference |
|---|---|---|---|
| January 6 | "Too Much Heaven" | Bee Gees | |
| January 13 | |||
| January 20 | "Le Freak" | Chic | |
| January 27 | |||
| February 3 | |||
| February 10 | "Da Ya Think I'm Sexy?" | Rod Stewart | |
| February 17 | |||
| February 24 | |||
| March 3 | |||
| March 10 | "I Will Survive" | Gloria Gaynor | |
| March 17 | |||
| March 24 | "Tragedy" | Bee Gees | |
| March 31 | |||
| April 7 | "I Will Survive" | Gloria Gaynor | |
| April 14 | "What a Fool Believes" | The Doobie Brothers | |
| April 21 | "Knock on Wood" | Amii Stewart | |
| April 28 | "Heart of Glass" | Blondie | |
| May 5 | "Reunited" | Peaches & Herb | |
| May 12 | |||
| May 19 | |||
| May 26 | |||
| June 2 | "Hot Stuff" | Donna Summer | |
| June 9 | "Love You Inside Out" | Bee Gees | |
| June 16 | "Hot Stuff" | Donna Summer | |
| June 23 | |||
| June 30 | "Ring My Bell" | Anita Ward | |
| July 7 | |||
| July 14 | "Bad Girls" | Donna Summer | |
| July 21 | |||
| July 28 | |||
| August 4 | |||
| August 11 | |||
| August 18 | "Good Times" | Chic | |
| August 25 | "My Sharona" | The Knack | |
| September 1 | |||
| September 8 | |||
| September 15 | |||
| September 22 | |||
| September 29 | |||
| October 6 | "Sad Eyes" | Robert John | |
| October 13 | "Don't Stop 'Til You Get Enough" | Michael Jackson | |
| October 20 | "Rise" | Herb Alpert | |
| October 27 | |||
| November 3 | "Pop Muzik" | M | |
| November 10 | "Heartache Tonight" | Eagles | |
| November 17 | "Still" | Commodores | |
| November 24 | "No More Tears (Enough is Enough)" | Barbra Streisand and Donna Summer | |
| December 1 | |||
| December 8 | "Babe" | Styx | |
| December 15 | |||
| December 22 | "Escape (The Piña Colada Song)" | Rupert Holmes | |
| December 29 |
|
|||||||||||||||||