1979

The following is a list of the number-one singles (main sides only) in the U.S. in 1979, based on a comparison between its three main charts at the time, from Billboard, Cash Box and Record World magazines.
Issue date 	Song 	Artist(s)
January 6 	"Le Freak" 	Chic
January 13 	"Too Much Heaven" 	Bee Gees
January 20 	"Le Freak" 	Chic
January 27 	"Le Freak" 	Chic
February 3 	"Le Freak" 	Chic
February 10 	"Da Ya Think I'm Sexy?" 	Rod Stewart
February 17 	"Da Ya Think I'm Sexy?" 	Rod Stewart
February 24 	"Da Ya Think I'm Sexy?" 	Rod Stewart
March 3 	"Da Ya Think I'm Sexy?" 	Rod Stewart
March 10 	"I Will Survive" 	Gloria Gaynor
March 17 	"Tragedy" 	Bee Gees
March 24 	"Tragedy" 	Bee Gees
March 31 	"Tragedy" 	Bee Gees
April 7 	"What a Fool Believes" 	The Doobie Brothers
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 	"Reunited" 	Peaches & Herb
May 19 	"Reunited" 	Peaches & Herb
May 26 	"Reunited" 	Peaches & Herb
June 2 	"Hot Stuff" 	Donna Summer
June 9 	"Hot Stuff" 	Donna Summer
June 16 	"Hot Stuff" 	Donna Summer
June 23 	"Hot Stuff" 	Donna Summer
June 30 	"Ring My Bell" 	Anita Ward
July 7 	"Ring My Bell" 	Anita Ward
July 14 	"Bad Girls" 	Donna Summer
July 21 	"Bad Girls" 	Donna Summer
July 28 	"Bad Girls" 	Donna Summer
August 4 	"Bad Girls" 	Donna Summer
August 11 	"Bad Girls" 	Donna Summer
August 18 	"My Sharona" 	The Knack
August 25 	"My Sharona" 	The Knack
September 1 	"My Sharona" 	The Knack
September 8 	"My Sharona" 	The Knack
September 15	"My Sharona" 	The Knack
September 22	"My Sharona" 	The Knack
September 29	"Sad Eyes" 	Robert John
October 6 	"Sad Eyes" 	Robert John
October 13 	"Don't Stop 'Til You Get Enough" 	Michael Jackson
October 20 	"Sail On" 	Commodores
October 27 	"Rise" 	Herb Alpert
November 3 	"Heartache Tonight" 	Eagles
November 10 	"Heartache Tonight" 	Eagles
November 17 	"Still" 	Commodores
November 24 	"No More Tears (Enough Is Enough)"	Barbra Streisand and Donna Summer
December 1 	"No More Tears (Enough Is Enough)"	Barbra Streisand and Donna Summer
December 8 	"Babe" 	Styx
December 15 	"Babe" 	Styx
December 22 	"Escape (The Piña Colada Song)" 	Rupert Holmes
December 29 	"Escape (The Piña Colada Song)" 	Rupert Holmes