|Short name||Sociedad Deportiva Itxako|
|Arena||Polideportivo Municipal Lizarrerria, Estella|
|2012–13||División de Honor, 11th|
Sociedad Deportiva Itxako, known as Asfi Itxako for sponsorship reasons, was a Spanish women's handball team from Estella-Lizarra, Navarre. Itxako were four times Spanish league winners and the EHF Women's Champions League runners-up.
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. 
- Spanish League (Liga ABF):
- Winner (4): 2009, 2010, 2011, 2012
- Runner-up: 2008
- Queen's Cup (Copa de S.M. la Reina)
- Winner (3): 2010, 2011, 2012
- Supercopa de España
- Winner (3): 2010, 2011, 2012
- Spanish Cup (Copa ABF)
- Runner-up: 2004, 2008
- Semifinalist: 2008
- EHF Champions League
- Runner-up: 2011
- Cup Winners' Cup
- Quarter-finalist: 2006
- EHF Cup
- Winner (1): 2009
- Finalist: 2008
Season to season
- 13 seasons in División de Honor
Notable former players
- Alexandrina Barbosa
- Carmen Martín
- Silvia Navarro
- Deonise Cavaleiro
- Macarena Aguilar
- Oana Şoit
- Emiliya Turey
- Elisabeth Pinedo
- Name: Polideportivo Municipal Lizarrerria
- City: Estella-Lizarra, Navarre, Spain
- Capacity: 2,000 seats
- Address: La Merindad, s/n
- "S.D. Itxako - History" (in Spanish). S.D. Itxako. Retrieved 2009-05-17.
- "Promociones Primera Estatal Femenina" (in Spanish). Royal Spanish Handball Federation. Retrieved 2009-05-17.
- "EHF European Cup 2003/04 - Clubs - S.D. Itxako Estella". European Handball Federation. Retrieved 2009-05-17.
- "El Itxako se proclama campeón de la Liga ABF" (in Spanish). Diario de Navarra. 14 May 2009. Retrieved 2009-05-17.
- "Doblete histórico del Itxako" (in Spanish). Diario de Navarra. 17 May 2009. Retrieved 2009-05-17.
- "EHF European Cup 2008/09 - Rounds - Final". European Handball Federation. Retrieved 2009-05-17.
- Itxako ceases sport activity Noticias de Navarra, August 23, 2013 (in Spanish)
- Itxako, liquidated by court order Noticias de Navarra, 17 October, 2013 (in Spanish)
- Usúa, Rubén (22 May 2008). "Estella ya vibra con el partido del sábado" (in Spanish). Diario de Noticias. Retrieved 2009-05-17.