This is a list of the number-one singles on the PROMUSICAE Top 20 Physical Singles chart in 2005.[1] [2]
| Issue date | Song | Artist(s) | Reference |
|---|---|---|---|
| January 9 | "Todo nos parece una mierda" | Astrud | [3] |
| January 16 | "Vertigo" | U2 | [4] |
| January 23 | "Galvanize" | The Chemical Brothers | [5] |
| January 30 | [6] | ||
| February 6 | "Nunca volverá" | El sueño de Morfeo | [7] |
| February 13 | [8] | ||
| February 20 | "Sometimes You Can't Make It On Your Own" | U2 | [9] |
| February 27 | "Nunca volverá" | El sueño de morfeo | [10] |
| March 3 | "El universo sobre mí" | Amaral | [11] |
| March 13 | [12] | ||
| March 20 | [13] | ||
| March 27 | "Nunca volverá" | El sueño de morfeo | [14] |
| April 3 | "Canto (El mismo dolor)" | Bunbury | [15] |
| April 10 | "The Trawlerman's Song" (EP) | Mark Knopfler | [16] |
| April 17 | [17] | ||
| April 24 | "Enamorada de ti" | Mónica Naranjo | [18] |
| May 1 | [19] | ||
| May 8 | "Renuncia al sol" | Skizoo | [20] |
| May 15 | "Feel Good Inc." | Gorillaz | [21] |
| May 22 | "La tortura" | Shakira con Alejandro Sanz | [22] |
| May 29 | [23] | ||
| June 5 | |||
| June 12 | |||
| June 19 | "City of Blinding Lights" | U2 | |
| June 26 | |||
| July 3 | "Himno oficial del centenario del Sevilla" | El Arrebato | |
| July 10 | "Axel F" | Crazy Frog | |
| July 17 | |||
| July 24 | |||
| July 31 | |||
| August 7 | "Himno oficial del centenario del Sevilla" | El Arrebato | |
| August 14 | |||
| August 21 | "Ooh la la" | Goldfrapp | |
| August 28 | "Streets of Love" | The Rolling Stones | |
| September 4 | "The Trooper" | Iron Maiden | |
| September 11 | |||
| September 18 | "Sin rencor" | OBK | |
| September 25 | |||
| October 2 | "Popcorn" | Crazy Frog | |
| October 9 | "Precious" | Depeche Mode | |
| October 16 | |||
| October 23 | |||
| October 30 | "Dos mentiras" | Circus | |
| November 6 | "La posada de los muertos" | Mago de Oz | |
| November 13 | "Hung Up" | Madonna | |
| November 20 | |||
| November 27 | |||
| December 4 | |||
| December 11 | |||
| December 18 | "A pain that I'm used to" | Depeche Mode | |
| December 25 | "Jingle Bells/Last Christmas" | Crazy Frog | |