After being a regular for Spain at youth level, Asensio made his debut for the under-21 team on 26 March 2015, coming on as a late substitute for goalscorer Gerard Deulofeu in a 2-0 friendly win over Norway in Cartagena [REF].
On 17 May 2016, Asensio and Espanyol teammate Pau López were called up to the full side for a friendly against Bosnia and Herzegovina [REF].