Spain has participated in the Eurovision Song Contest in every edition since 1961, in total 63 times. Since 1999, Spain has been one of the "Big Five" countries, along with France, Germany, Italy and the United Kingdom, that are automatically prequalified for the final each year as they are the biggest financial contributors to the European Broadcasting Union (EBU).

The Eurovision Song Contest, often known simply as Eurovision, is an international song competition organised annually by the European Broadcasting Union. Each participating country submits an original song to be performed live and transmitted to national broadcasters via the Eurovision and Euroradio networks, with competing countries then casting votes for the other countries' songs to determine a winner.