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Itxako Reyno de Navarra is the professional top level women's team of the S.D. Itxako (Spanish: Sociedad Deportiva Itxako, Itxako Sports Society). The S.D. was founded in 1972. The women's handball department started in 1990 with a young age category team. Ten years later, in 2000, the senior team won the promotion to the top division for women's clubs in Spain, Honor Division (Spanish: División de Honor).
Itxako's first appearance in a European competition was the Women's EHF Cup 2003/04. They were defeated at the eight-finals by Győri Audi ETO KC. In 2008 they finished second in the Spanish league, tied in points with the winner Elda Prestigio. Also during that season Itxako reached the finals of the EHF Cup but lost the title to Russian club HC Dinamo Volgograd. 2009 brought the first title of the club when Itxako secured the first place at the Spanish league. The success was doubled when they won the EHF Cup against German club HC Leipzig.
The club didn't enrolled any handball team for 2013–14 season as they are experiencing serious financial problems from 2011 after losing main sponsor Asfi. Finally, on 17 October 2013, the club was liquidated by a court order.