Mamadou Cellou Diallo (born 5 January 2002) is a Guinean professional footballer who plays as a winger for Spanish club CD Alcoyano.
Born in Conakry, Cellou moved to Spain at the age of 14,[1] and joined CF Lorca Deportiva's youth sides from CE Puig-reig.
On 31 January 2020, he was promoted to the first team,[2] and featured in one match before the season was suspended due to the COVID-19 pandemic.
[4] On 16 July 2023, Cellou moved to FC Cartagena and was assigned to the reserves in the fourth division.
[5] He made his first team – and professional – debut the following 14 January, coming on as a late substitute for Tomás Alarcón in a 4–1 Segunda División home routing of Villarreal CF B.