This is the RIANZ list of number one albums in New Zealand music charts during 1999, starting from Sunday 10 January.
Grey shading indicates an album of New Zealand origin.
| Week | Title | Artist |
|---|---|---|
| 3 January | The Very Best of Dean Martin | Dean Martin |
| 10 January | One Night Only | Bee Gees |
| 17 January | One Night Only | Bee Gees |
| 24 January | Believe | Cher |
| 31 January | Believe | Cher |
| 7 February | Believe | Cher |
| 14 February | Believe | Cher |
| 21 February | My Own Prison | Creed |
| 28 February | My Own Prison | Creed |
| 7 March | My Own Prison | Creed |
| 14 March | Americana | The Offspring |
| 21 March | One Night Only | Bee Gees |
| 28 March | One Night Only | Bee Gees |
| 4 April | One Night Only | Bee Gees |
| 11 April | One Night Only | Bee Gees |
| 18 April | You've Come a Long Way, Baby | Fatboy Slim |
| 25 April | One Night Only | Bee Gees |
| 2 May | Come On Over | Shania Twain |
| 9 May | Come On Over | Shania Twain |
| 16 May | Come On Over | Shania Twain |
| 23 May | Come On Over | Shania Twain |
| 30 May | Come On Over | Shania Twain |
| 6 June | Talk on Corners: Special Edition | The Corrs |
| 13 June | Millennium | Backstreet Boys |
| 20 June | Ricky Martin | Ricky Martin |
| 27 June | Dream | TrueBliss |
| 4 July | By Request | Boyzone |
| 11 July | By Request | Boyzone |
| 18 July | By Request | Boyzone |
| 25 July | The Ego Has Landed | Robbie Williams |
| 1 August | Come On Over | Shania Twain |
| 8 August | ||
| 15 August | Come On Over | Shania Twain |
| 22 August | Come On Over | Shania Twain |
| 29 August | Come On Over | Shania Twain |
| 5 September | Come On Over | Shania Twain |
| 12 September | Come On Over | Shania Twain |
| 19 September | Ricky Martin | Ricky Martin |
| 26 September | Mix | Stellar* |
| 3 October | Come On Over | Shania Twain |
| 10 October | The General Electric | Shihad |
| 17 October | Come On Over | Shania Twain |
| 24 October | Come On Over | Shania Twain |
| 31 October | Come On Over | Shania Twain |
| 7 November | Come On Over | Shania Twain |
| 14 November | The Battle of Los Angeles | Rage Against the Machine |
| 21 November | Come On Over | Shania Twain |
| 28 November | Come On Over | Shania Twain |
| 5 December | Come On Over | Shania Twain |
| 12 December | Come On Over | Shania Twain |
| 19 December | Come On Over | Shania Twain |
| 26 December | Come On Over | Shania Twain |
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