Hachim Mastour (Arabic: هاشم مستور; born 15 June 1998) is a Moroccan professional footballer who plays as an attacking midfielder or second striker. He began his career at Reggiana, and signed for Milan for €500,000 at the age of 14. In 2015 he was loaned for two years to Málaga, making only one substitute appearance before the deal was terminated a year early. He was then lent to PEC Zwolle, before signing for Greek side Lamia on a permanent deal. In 2019 Mastour returned to Italy, signing for Serie C side Reggina.