Yacoub Aly Abeid (Arabic: علي عبيد هو‎; born 11 December 1997) is a Mauritanian footballer who plays for Ligue 2 club Valenciennes FC and the Mauritanian national football team as a defender. Aly Abeid and compatriot Moctar Sidi El Hacen were signed by Spanish club Levante UD in 2014 after impressing in a nearby tournament, but could not play competitively for the team until the age of 18 due to FIFA regulations. He began to play for the reserve team in Segunda División B and Tercera División. On 15 April 2018 among a crisis of injuries and suspensions in the Valencian club, Aly Abeid made his debut as a starter for the first team in La Liga, in a 3–0 loss at Atlético Madrid. He was praised by Marca for his performance. Aly Abeid was loaned to AD Alcorcón of Segunda División on 16 July 2018 for a season, and was registered with their second team in the fourth tier. On 23 January 2020, Abeid officially joined French Ligue 2 club Valenciennes FC, signing a deal until June 2022.