|Full name||Aritz Solabarrieta Aranzamendi|
|Date of birth||22 July 1983|
|Place of birth||Ondarroa, Spain|
|Height||1.90 m (6 ft 3 in)|
|Bilbao Athletic (manager)|
|2005–2006||→ Eibar (loan)||27||(0)|
|2007–2008||Atlético Madrid B||48||(1)|
|2016–2018||Athletic Bilbao (youth)|
|* Senior club appearances and goals counted for the domestic league only|
Born in Ondarroa, Basque Country and a product of Athletic Bilbao's prolific youth ranks at Lezama, Solabarrieta played only one full season for its first team, in 2004–05, helping with 11 matches as the Basque finished ninth. His La Liga debut came on 13 November 2004 in a 2–1 home win against Villarreal CF, as he came on as a substitute for Andoni Iraola in injury time.
After a loan with neighbours SD Eibar in the second division, which ended in relegation, Solabarrieta was released by the Lions in December 2006 and resumed his career in the third level, starting with Atlético Madrid B. He retired in June 2015 at the age of nearly 32, after two years with amateurs CD Aurrerá Ondarroa in his hometown.
Solabarrieta won 16 caps for Spain at youth level, including two for the under-21 side. His first appearance for the latter occurred on 17 August 2004, as he featured 22 minutes in a 1–1 friendly draw in France.
After his playing days ended, Solabarrieta embarked on a career as a coach. In 2016, he was appointed as manager of Athletic Bilbao's Cadete A youth team; the following year, he moved to control the Juvenil A squad.
Due to a combination of a disappointing campaign for the CD Basconia farm team coached by Ander Alaña and Solabarrieta's good work with the youths, the two men swapped roles within the club's structure for the 2018–19 campaign. However, he was soon promoted again when Gaizka Garitano, coach of the reserve side, was selected to take the helm of the senior team in December 2018, in turn leaving a vacancy at Athletic Bilbao B which Solabarrieta was nominated to fill.
- As of 12 May 2019
|Basconia||21 June 2018||4 December 2018||15||5||5||5||22||19||+3||33.33|||
|Bilbao Athletic||4 December 2018||Present||22||10||4||8||38||29||+9||45.45|||
- "Urzaiz alivia con goles las urgencias del Athletic" [Urzaiz softens Athletic's urgencies with goals]. El Mundo (in Spanish). 13 November 2004. Retrieved 26 June 2017.
- "La nueva etapa de Sáez, con tablas" [Sáez's new era, all square]. Mundo Deportivo (in Spanish). 18 August 2004. Retrieved 26 June 2017.
- "Lezama organizational chart". Athletic Bilbao. 29 June 2016. Retrieved 3 August 2017.
- "Lezama technical chart". Athletic Bilbao. 8 June 2017. Retrieved 3 August 2017.
- "Solabarrieta sube al Basconia; Galiano, al Juvenil A y Alaña baja al Cadete B" [Solabarrieta goes up to Basconia; Galiano, to Juvenile A and Alaña down to Cadet B]. Mundo Deportivo (in Spanish). 21 June 2018. Retrieved 5 December 2018.
- "Replacement of Eduardo Berizzo". Athletic Bilbao. 4 December 2018. Retrieved 5 December 2018.
- "Aritz Solabarrieta, Bilbao Athletic's coach". Athletic Bilbao. 4 December 2018. Retrieved 5 December 2018.
- "2018–19 CD Basconia Fixtures and Results" (in Spanish). Futbolme. Retrieved 6 December 2018.
- "Solabarrieta: Aritz Solabarrieta Aranzamendi: Matches 2018–19". BDFutbol. Retrieved 11 December 2018.
- "España vence a Alemania y se proclama campeona de Europa Sub-19" [Spain beat Germany and are crowned Under-19 European champions]. Diario AS (in Spanish). 28 July 2002. Retrieved 6 September 2018.