|Full name||Asier Barahona Bregón|
|Date of birth||18 November 1992|
|Place of birth||Miranda de Ebro, Spain|
|Height||1.76 m (5 ft 9 1⁄2 in)|
|2010–2011||→ Aurrerá (loan)||20||(1)|
|2012–2013||→ Alavés (loan)||21||(3)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 12 November 2017.
Born in Miranda de Ebro, Province of Burgos, Barahona played youth football with local CD Mirandés. In July 2010 he was loaned to lowly CD Aurrerá de Vitoria, and made his senior debuts with the club in Tercera División.
In the following season, Barahona returned to Mirandés, totalling 686 minutes in Segunda División B as the Castile and León side promoted to Segunda División for the first time ever. He signed a new contract on 14 July 2012, being immediately loaned to Deportivo Alavés also in the third level and again achieving promotion, to which he contributed with 21 appearances including the playoffs.
On 12 October 2013, Barahona made his professional debut, playing the last 12 minutes in a 2–3 home loss against his previous team Alavés. He scored his first goal in the second level on 3 January 2015, netting the last in a 3–1 away win over the same opponent.
- Asier Barahona defenderá al Aurrera (Asier Barahona will defend Aurrera); El Correo, 23 July 2010 (in Spanish)
- El Mirandés renueva a Asier Barahona y lo cede al Alavés (Mirandés renew Asier Barahona and loan him to Alavés); Diario AS, 14 July 2012 (in Spanish)
- Un gran primer tiempo, da la primera victoria a domicilio al Alavés (A great first half, gives Alavés first away win of the season); Marca, 12 October 2013 (in Spanish)
- El Alavés se estrella ante un Mirandés solvente y práctico en ataque (Alavés crash against sound and offensively practical Mirandés); Marca, 3 January 2015 (in Spanish)