List of number-one singles in 1978 (New Zealand)
This is a list of Number 1 hit singles in 1978 in New Zealand, starting with the first chart dated, 29 January 1978.
Chart
;Key| Week | Artist | Title |
| 29 January 1978 | Wings | "Mull of Kintyre" |
| 5 February 1978 | Wings | "Mull of Kintyre" |
| 12 February 1978 | Wings | "Mull of Kintyre" |
| 19 February 1978 | Wings | "Mull of Kintyre" |
| 26 February 1978 | Wings | "Mull of Kintyre" |
| 5 March 1978 | Wings | "Mull of Kintyre" |
| 12 March 1978 | Wings | "Mull of Kintyre" |
| 19 March 1978 | Samantha Sang | "Emotion" |
| 26 March 1978 | Bee Gees | "Stayin' Alive" |
| 2 April 1978 | ||
| 9 April 1978 | John Rowles | "Tania" |
| 16 April 1978 | John Rowles | "Tania" |
| 23 April 1978 | John Rowles | "Tania" |
| 30 April 1978 | John Rowles | "Tania" |
| 7 May 1978 | Kate Bush | "Wuthering Heights" |
| 14 May 1978 | Kate Bush | "Wuthering Heights" |
| 21 May 1978 | Kate Bush | "Wuthering Heights" |
| 28 May 1978 | Kate Bush | "Wuthering Heights" |
| 6 June 1978 | Kate Bush | "Wuthering Heights" |
| 11 June 1978 | John Travolta & Olivia Newton-John | "You're the One That I Want" |
| 18 June 1978 | John Travolta & Olivia Newton-John | "You're the One That I Want" |
| 23 June 1978 | John Travolta & Olivia Newton-John | "You're the One That I Want" |
| 2 July 1978 | John Travolta & Olivia Newton-John | "You're the One That I Want" |
| 9 July 1978 | Boney M. | "Rivers of Babylon" |
| 16 July 1978 | Boney M. | "Rivers of Babylon" |
| 23 July 1978 | Boney M. | "Rivers of Babylon" |
| 30 July 1978 | Boney M. | "Rivers of Babylon" |
| 6 August 1978 | Boney M. | "Rivers of Babylon" |
| 13 August 1978 | Boney M. | "Rivers of Babylon" |
| 20 August 1978 | Boney M. | "Rivers of Babylon" |
| 27 August 1978 | Boney M. | "Rivers of Babylon" |
| 3 September 1978 | Boney M. | "Rivers of Babylon" |
| 10 September 1978 | Boney M. | "Rivers of Babylon" |
| 17 September 1978 | Boney M. | "Rivers of Babylon" |
| 24 September 1978 | Boney M. | "Rivers of Babylon" |
| 1 October 1978 | Boney M. | "Rivers of Babylon" |
| 8 October 1978 | Boney M. | "Rivers of Babylon" |
| 15 October 1978 | Exile | "Kiss You All Over" |
| 22 October 1978 | Exile | "Kiss You All Over" |
| 29 October 1978 | Exile | "Kiss You All Over" |
| 5 November 1978 | Exile | "Kiss You All Over" |
| 12 November 1978 | Clout | "Substitute" |
| 19 November 1978 | Clout | "Substitute" |
| 26 November 1978 | Clout | "Substitute" |
| 3 December 1978 | 10cc | "Dreadlock Holiday" |
| 10 December 1978 | 10cc | "Dreadlock Holiday" |
| 17 December 1978 | 10cc | "Dreadlock Holiday" |