Alfredo Pérez Rubalcaba (28 July 1951 – 10 May 2019) was a Spanish politician, professor and chemist. He served as the Deputy Prime Minister of Spain, under Prime Minister Mariano Rajoy, from 2010 to 2011. Before this, he served as Minister of Education (1992–1993), as Minister of the Presidency (1993–1996), as Minister of the Interior (2006–2011) and as acting Minister of Defence between May and June 2008. He also served as Leader of the Opposition from 2011 to 2014. Pérez Rubalcaba was a member of the Spanish Socialist Workers' Party (PSOE). He was the party's Secretary-General from 2012 to 2014.