List of number-one albums of 2005 (Spain)
The following is a list of albums that reached the number-one position on the Spanish Albums Chart in 2005, as compiled by Promusicae (Productores de Música de España), the official record chart provider in Spain. The chart ranks albums based on a combination of physical sales, digital downloads, and streaming data.
- January 3: Pájaros en la cabeza - Amaral
- January 10: Pájaros en la cabeza - Amaral
- January 17: Pájaros en la cabeza - Amaral
- January 24: Pájaros en la cabeza - Amaral
- January 31: Pájaros en la cabeza - Amaral
- February 7: Como Ama Una Mujer - Jennifer Lopez
- February 14: Como Ama Una Mujer - Jennifer Lopez
- February 21: Como Ama Una Mujer - Jennifer Lopez
- February 28: Como Ama Una Mujer - Jennifer Lopez
- March 7: Anastacia - Anastacia
- March 14: Anastacia - Anastacia
- March 21: Anastacia - Anastacia
- March 28: La Oreja de Van Gogh - Guapa
- April 4: La Oreja de Van Gogh - Guapa
- April 11: La Oreja de Van Gogh - Guapa
- April 18: La Oreja de Van Gogh - Guapa
- April 25: La Oreja de Van Gogh - Guapa
- May 2: La Oreja de Van Gogh - Guapa
- May 9: La Oreja de Van Gogh - Guapa
- May 16: La Oreja de Van Gogh - Guapa
- May 23: La Oreja de Van Gogh - Guapa
- May 30: X&Y - Coldplay
- June 6: X&Y - Coldplay
- June 13: X&Y - Coldplay
- June 20: La Oreja de Van Gogh - Guapa
- June 27: La Oreja de Van Gogh - Guapa
- July 4: La Oreja de Van Gogh - Guapa
- July 11: La Oreja de Van Gogh - Guapa
- July 18: La Oreja de Van Gogh - Guapa
- July 25: La Oreja de Van Gogh - Guapa
- August 1: La Oreja de Van Gogh - Guapa
- August 8: La Oreja de Van Gogh - Guapa
- August 15: La Oreja de Van Gogh - Guapa
- August 22: La Oreja de Van Gogh - Guapa
- August 29: La Oreja de Van Gogh - Guapa
- September 5: Back to Bedlam - James Blunt
- September 12: Back to Bedlam - James Blunt
- September 19: Back to Bedlam - James Blunt
- September 26: Back to Bedlam - James Blunt
- October 3: Back to Bedlam - James Blunt
- October 10: Back to Bedlam - James Blunt
- October 17: Back to Bedlam - James Blunt
- October 24: Back to Bedlam - James Blunt
- October 31: La Oreja de Van Gogh - Guapa
- November 7: Confessions on a Dance Floor - Madonna
- November 14: Confessions on a Dance Floor - Madonna
- November 21: Confessions on a Dance Floor - Madonna
- November 28: Confessions on a Dance Floor - Madonna
- December 5: Paseo Por Lo Eterno - El Barrio
- December 12: Paseo Por Lo Eterno - El Barrio
- December 19: Paseo Por Lo Eterno - El Barrio
- December 26: Paseo Por Lo Eterno - El Barrio