This is a list of the Spanish Singles number-ones of 1978.[1]
| Issue Date | Song | Artist |
|---|---|---|
| 2 January | "Credo" | |
| 9 January | ||
| 16 January | ||
| 23 January | ||
| 30 January | ||
| 6 February | ||
| 13 February | ||
| 20 February | "Unlimited Citations" | |
| 27 February | "Te amo" | |
| 6 March | ||
| 13 March | ||
| 20 March | ||
| 27 March | ||
| 3 April | ||
| 10 April | ||
| 17 April | "Ballade pour Adeline" | |
| 24 April | ||
| 1 May | "Poco a poco... me enamoré de ti" | |
| 8 May | "Stayin' Alive" | |
| 15 May | "Te Amo" | Umberto Tozzi |
| 22 May | "Stayin' Alive" | Bee Gees |
| 29 May | ||
| 5 June | ||
| 12 June | ||
| 19 June | "Night Fever" | Bee Gees |
| 26 June | ||
| 3 July | "Cara de gitana" | |
| 10 July | ||
| 17 July | "Sólo tú" | |
| 24 July | "Cara de gitana" | Daniel Magal |
| 31 July | "Anna" | |
| 7 August | ||
| 14 August | "It's a Heartache" | |
| 21 August | ||
| 28 August | "Rivers of Babylon" | |
| 4 September | ||
| 11 September | ||
| 18 September | ||
| 25 September | ||
| 2 October | "Lay Love on You" | |
| 9 October | "You're the One That I Want" | |
| 16 October | ||
| 23 October | ||
| 30 October | ||
| 6 November | ||
| 13 November | ||
| 20 November | ||
| 27 November | ||
| 4 December | "Tú" | Umberto Tozzi |
| 11 December | ||
| 18 December | ||
| 25 December |