Carles Aleñá Castillo (born 5 January 1998) is a Spanish professional footballer who plays as a central midfielder for La Liga club Alavés on loan from Getafe.

[3][4] Highly rated by the club,[5][6] he made his debut with the reserves on 29 August 2015, coming on as a late substitute for David Babunski in a 0–0 Segunda División B home draw against Pobla de Mafumet.

[9] Aleñá was first included in Barcelona's main squad on 10 February 2016,[10] remaining an unused substitute in their 1–1 away draw against Valencia in the second leg of 2015-16 Copa del Rey semi-finals.

[12] Aleñá made his La Liga debut on 2 April 2017, coming on as a second-half substitute for Ivan Rakitić in a 4–1 away routing of Granada.

On 28 December 2019, Barcelona announced that they had reached an agreement with Real Betis for the loan transfer of Aleñá until the end of the season.