This is a list of the Spanish PROMUSICAE Top 20 Singles number-ones of 1990.[1]
| Issue Date | Song | Artist | |
|---|---|---|---|
| 6 January | "That's What I Like" | Jive Bunny and the Mastermixers | |
| 13 January | |||
| 20 January | "Pump Up the Jam" | Technotronic | |
| 27 January | |||
| 3 February | "All Around the World" | Lisa Stansfield | |
| 10 February | "Pump Up the Jam" | Technotronic | |
| 17 February | "All Around the World" | Lisa Stansfield | |
| 24 February | "Pump Up the Jam" | Technotronic | |
| 3 March | |||
| 10 March | |||
| 17 March | "Get Up! (Before the Night Is Over)" | ||
| 24 March | "Enjoy the Silence" | Depeche Mode | |
| 31 March | |||
| 7 April | |||
| 14 April | |||
| 21 April | |||
| 28 April | "Vogue" | Madonna | |
| 5 May | |||
| 12 May | |||
| 19 May | |||
| 26 May | |||
| 2 June | |||
| 9 June | "Infinity" | Guru Josh | |
| 16 June | "The Power" | Snap! | |
| 23 June | "Infinity" | Guru Josh | |
| 30 June | |||
| 7 July | "La Abuela" | Wilfred y la Gagna | |
| 14 July | |||
| 21 July | "Infinity" | Guru Josh | |
| 28 July | |||
| 4 August | |||
| 11 August | |||
| 18 August | |||
| 25 August | |||
| 1 September | |||
| 8 September | "It's On You" | MC Sar & the Real McCoy | |
| 15 September | "I Can't Stand It" | Twenty 4 Seven | |
| 22 September | "It's On You" | MC Sar & the Real McCoy | |
| 29 September | "I Can't Stand It" | Twenty 4 Seven | |
| 6 October | |||
| 13 October | |||
| 20 October | |||
| 27 October | |||
| 3 November | "Cult of Snap" | Snap | |
| 10 November | |||
| 17 November | |||
| 24 November | |||
| 1 December | "Ultimo Imperio" | Atawalpa | |
| 8 December | "I've Been Thinking About You" | Londonbeat | |
| 15 December | |||
| 22 December | |||
| 29 December |