Union, Progress and Democracy (Spanish: Unión, Progreso y Democracia [unˈjon, pɾoˈɣɾeso j ðemoˈkɾaθja], UPyD [upejˈðe]) was a Spanish political party founded in September 2007 and dissolved in December 2020. It was a social-liberal party that rejected any form of nationalism, especially the separatist Basque and Catalan movements. The party was deeply pro-European and wanted the European Union to adopt a federal system without overlap between the European, national and regional governments. It also wanted to replace the State of Autonomies with a much more centralist, albeit still politically decentralized, unitary system as well as substituting a more proportional election law for the current one.
UPyD first stood for election in the 9 March 2008 general election. It received 303,246 votes, or 1.2% of the national total. It won one seat in the Congress of Deputies for party co-founder Rosa Díez, becoming the newest party with national representation in Spain. Although its core was in the Basque Autonomous Community, with roots in anti-ETA civic associations, it addressed a national audience. Prominent members of the party included philosopher Fernando Savater, party founder and former PSOE MEP Rosa Díez, philosopher Carlos Martínez Gorriarán and writer Álvaro Pombo.
In the general elections held on 20 November 2011, the party won 1,143,225 votes (4.70 percent), five seats which it was able to form a parliamentary group with in the Congress of Deputies (four in Madrid and one in Valencia) and became the fourth-largest political force in the country. It had the greatest increase of votes over the previous general election of any party. In the 2015 general election, however, it suffered a decline in its vote power by losing all of its seats. In the 2016 general election, it dropped to just 0.2% of the national vote.
On 18 November 2020, a judge ordered the dissolution of the party and its erasure from the registry of political parties, as it did not have the financial solvency to pay off the debt contracted with a former worker. The party announced that it would appeal the sentence. On 6 December 2020, it was announced that the party would no longer appeal the sentence, thus formally extinguishing UPyD.