In addition to the domestic league, Villarreal participated in this season's editions of the Copa del Rey and the UEFA Europa League.

The season covered the period from 1 July 2018 to 30 June 2019.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.