|Full name||Unai Albizua Urquijo|
|Date of birth||18 January 1989|
|Place of birth||Barakaldo, Spain|
|Height||1.81 m (5 ft 11 1⁄2 in)|
|Playing position||Centre back|
|2014–||→ Tenerife (loan)||0||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 12 May 2014.
† Appearances (Goals).
Born in Barakaldo, Biscay, Albizua joined Athletic Bilbao's youth system in 2003. He played three full seasons with the reserves in Segunda División B, captaining them to the 2013 playoffs after a third-place finish in his last.
Albizua was promoted to the first team prior to the beginning of the 2013–14 campaign. On 3 November 2013 he made his La Liga debut, coming on as a 67th-minute substitute in a 0–2 away loss against Atlético Madrid after replacing injured Aymeric Laporte.
- "Unai Albizua se lleva el trofeo al mejor cachorro 2012/13 de 'La Cantera de Lezama'" [Unai Albizua takes trophy for best 2012/13 puppy from 'La Cantera de Lezama'] (in Spanish). El Desmarque. 14 September 2013. Retrieved 5 November 2013.
- "El Athletic hace ficha del primer equipo al central Albizua" [Athletic includes stopper Albizua in first team] (in Spanish). Canal Athletic. 28 August 2013. Retrieved 5 November 2013.
- "More home comforts for Atletico". ESPN FC. 3 November 2013. Retrieved 5 November 2013.
- "Albizua’s transfer". Athletic Bilbao's official website. 15 July 2014. Retrieved 15 July 2014.