Spain participated in the Eurovision Song Contest 2005 with "Brujería" sung by the trio Son de Sol. The song was chosen by a national final, and at Eurovision, it placed 21st receiving 28 points.

Twelve acts participated in the Spanish national final Eurovisión 2005: Elige nuestra canción, broadcast from the in Madrid by TVE and hosted by Carlos Lozano, Patricia Pérez and Ainhoa Arbizu. The competition consisted of one semi-final, held on 4 March 2005, and a final held a day later on 5 March 2005. The list of participants included the controversial trio Las Supremas de Móstoles, who ranked second.

Son de Sol won the contest featuring their song "Brujería" (Witchcraft). The song was written and composed by Alfredo Panebianco. The winner was decided by televoting.

Spain automatically qualified for the grand final, on 21 May 2005; as part of the "Big Four". During the placement draw, it was determined that Spain would perform 10th. On 21 May, Spain placed 21st with 28 points.

The spokesperson who revealed Spain's votes for other countries was TVE and national final host Ainhoa Arbizu.

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