These are the number-one singles of 1978 according to the Top 100 Singles in Cash Box Magazine
+KeyThe yellow background indicates the #1 song of 1978.
Issue date Song ArtistJanuary 7 "How Deep Is Your Love" Bee GeesJanuary 14 "Baby Come Back" PlayerJanuary 21 January 28 "Short People" Randy NewmanFebruary 4 "Stayin' Alive" Bee GeesFebruary 11 February 18 February 25 March 4 "(Love Is) Thicker Than Water" Andy GibbMarch 11 "Emotion" Samantha SangMarch 18 "Night Fever" Bee GeesMarch 25 April 1 April 8 April 15 April 22 April 29 May 6 May 13 "If I Can't Have You" Yvonne EllimanMay 20 "With a Little Luck" Paul McCartney & WingsMay 27 June 3 "Shadow Dancing" Andy GibbJune 10 June 17 June 24 July 1 July 8 July 15 "Baker Street" Gerry RaffertyJuly 22 July 29 "Miss You" Rolling StonesAugust 5 August 12 "Three Times A Lady" CommodoresAugust 19 August 26 September 2 September 9 "Grease" Frankie ValliSeptember 16 "Boogie Oogie Oogie" A Taste Of HoneySeptember 23 September 30 October 7 "Kiss You All Over" ExileOctober 14 October 21 "Hot Child In The City" Nick GilderOctober 28 November 4 November 11 "MacArthur Park" Donna SummerNovember 18 November 25 "You Don't Bring Me Flowers" Barbra Streisand & Neil DiamondDecember 2 December 9 December 16 "Le Freak" ChicDecember 23 December 30
References http://www.cashboxmagazine.com/archives/70s_files/1978.html https://web.archive.org/web/20060614052031/http://musicseek.info/no1hits/1978.htm
See also
1978 in music List of number-one hits (USA) Hot 100 number-one hits of 1978 (USA) by Billboard magazine RPM number-one hits of 1978 for the #1 hits in Canada