| Last year | No 1 hits of the year 1990 | Next year |
| US | UK | |
| 6 Jan 1990 | Another Day In Paradise Phil Collins) |
Do They Know It's Christmas (Band Aid II) |
| 13 Jan 1990 | Another Day In Paradise (Phil Collins) |
Hangin' Tough (New Kids On The Block) |
| 20 Jan 1990 | How Am I Supposed To Live Without You (Michael Bolton) |
Hangin' Tough (New Kids On The Block) |
| 27 Jan 1990 | How Am I Supposed To Live Without You (Michael Bolton) |
Tears On My Pillow (Kylie Minogue) |
| 03 Feb 1990 | How Am I Supposed To Live Without You (Michael Bolton) |
Nothing Compares 2 U (Sinead O'Connor) |
| 10 Feb 1990 | Opposites Attract (Paula Abdul) |
Nothing Compares 2 U (Sinead O'Connor) |
| 17 Feb 199o | Opposites Attract (Paula Abdul) |
Nothing Compares 2 U (Sinead O'Connor) |
| 24 Feb 1972 | Opposites Attract (Paula Abdul) |
Nothing Compares 2 U (Sinead O'Connor) |
| 03 Mar 1990 | Escapade (Janet Jackson) |
Dub Be Good To Me (Beats International featuring Lindy) |
| 10 Mar 1990 | Escapade (Janet Jackson) |
Dub Be Good To Me (Beats International featuring Lindy) |
| 17 Mar 1990 | Escapade (Janet Jackson) |
Dub Be Good To Me (Beats International featuring Lindy) |
| 24 Mar 1990 | Black Velvet (Alannah Myles) |
Dub Be Good To Me (Beats International featuring Lindy) |
| 31 Mar 1990 | Black Velvet (Alannah Myles) |
The Power (Snap) |
| 7 Apr 1990 | Love Will Lead You Back (Taylor Dayne) |
The Power (Snap) |
| 14 Apr 1990 | I'll Be Your Everything (Tommy Page) |
Vogue (Madonna) |
| 21 Apr 1990 | Nothing Compares 2 U (Sinead O'Connor) |
Vogue (Madonna) |
| 28 Apr 1990 | Nothing Compares 2 U (Sinead O'Connor) |
Vogue (Madonna) |
| 5 May 1990 | Nothing Compares 2 U (Sinead O'Connor) |
Vogue (Madonna) |
| 12 May 1990 | Nothing Compares 2 U (Sinead O'Connor) |
Killer (Adamski) |
| 19 May 1990 | Vogue (Madonna) |
Killer (Adamski) |
| 26 May 1990 | Vogue (Madonna) |
Killer (Adamski) |
| 02 Jun 1990 | Vogue (Madonna) |
Killer (Adamski) |
| 09 Jun 1990 | Hold On (Wilson Phillips) |
World In Motion (England New Order) |
| 16 Jun 1990 | It Must Have Been Love (Roxette) |
World In Motion (England New Order) |
| 23 Jun 1990 | It Must Have Been Love (Roxette) |
Sacrifice / Healing Hands (Elton John) |
| 30 Jun 1990 | Step By Step (New Kids On The Block) |
Sacrifice / Healing Hands (Elton John) |
| 7 Jul 1990 | Step By Step (New Kids On The Block) |
Sacrifice / Healing Hands (Elton John) |
| 14 Jul 1990 | Step By Step (New Kids On The Block) |
Sacrifice / Healing Hands (Elton John) |
| 21 Jul 1990 | She Ain't Worth It (Glenn Medeiros feat. Bobby Brown) |
Sacrifice / Healing Hands (Elton John) |
| 28 Jul 1990 | She Ain't Worth It (Glenn Medeiros feat. Bobby Brown) |
Turtle Power (Partners In Kryme) |
| 4 Aug 1990 | Vision Of Love (Mariah Carey) |
Turtle Power (Partners In Kryme) |
| 11 Aug 1990 | Vision Of Love (Mariah Carey) |
Turtle Power (Partners In Kryme) |
| 18 Aug 1990 | Vision Of Love (Mariah Carey) |
Turtle Power (Partners In Kryme) |
| 25 Aug 1990 | Vision Of Love (Mariah Carey) |
Itsy Bitsy Teeny Weeny Yellow Polka Dot Bikini (Bombalurina) |
| 1 Sep 1990 | If Wishes Came True (Sweet Sensation) |
Itsy Bitsy Teeny Weeny Yellow Polka Dot Bikini (Bombalurina) |
| 8 Sep 1990 | Blaze Of Glory (Jon Bon Jovi) |
Itsy Bitsy Teeny Weeny Yellow Polka Dot Bikini (Bombalurina) |
| 15 Sep 1990 | Release Me (Wilson Phillips) |
The Joker (Steve Miller Band) |
| 22 Sep 1990 | Release Me (Wilson Phillips) |
The Joker (Steve Miller Band) |
| 29 Sep 1990 | (Can't Live Without Your) Love And Affection (Nelson) |
Show Me Heaven (Maria McKee) |
| 6 Oct 1990 | Close To You (Maxi Priest) |
Show Me Heaven (Maria McKee) |
| 13 Oct 1990 | Praying For Time (George Michael) |
Show Me Heaven (Maria McKee) |
| 20 Oct 1990 | I Don't Have The Heart (James Ingram) |
Show Me Heaven (Maria McKee) |
| 27 Oct 1990 | Black Cat (Janet Jackson) |
A Little Time (The Beautiful South) |
| 03 Nov 1990 | Ice Ice Baby (Vanilla Ice) |
Unchained Melody (Righteous Brothers) |
| 10 Nov 1990 | Love Takes Time (Mariah Carey) |
Unchained Melody (Righteous Brothers) |
| 17 Nov 1990 | Love Takes Time (Mariah Carey) |
Unchained Melody (Righteous Brothers) |
| 24 Nov 1990 | Love Takes Time (Mariah Carey) |
Unchained Melody (Righteous Brothers) |
| 1 Dez 1990 | I'm Your Baby Tonight (Whitney Houston) |
Ice Ice Baby (Vanilla Ice) |
| 8 Dez 1990 | Because I Love You (The Postman Song) (Stevie B) |
Ice Ice Baby (Vanilla Ice) |
| 15 Dez 1990 | Because I Love You (The Postman Song) (Stevie B) |
Ice Ice Baby (Vanilla Ice) |
| 22 Dez 1990 | Because I Love You (The Postman Song) (Stevie B) |
Ice Ice Baby (Vanilla Ice) |
| 29 Dez 1990 | Because I Love You (The Postman Song) (Stevie B) |
Saviour's Day (Cliff Richard) |