Mehdi Embareck Zeffane (Arabic: مهدي زفان; born 19 May 1992) is an Algerian professional footballer who plays for Ligue 1 club Rennes and the Algeria national football team. He plays primarily as a right-back, but has also been used as a left winger or left midfielder.
Born in Sainte-Foy-lès-Lyon, a commune in the Metropolis of Lyon, Zeffane made his debut for the Olympique Lyonnais B side on 21 August 2010 against RCO Agde at the Stade Louis Sanguin, in which he played the full 90 minutes, as Lyon's B team lost the match 1–0. He scored his first goal for the Lyon B team the next season on 13 August 2011 against FC Villefranche at the Stade Armand Chouffet, when he found the net in the 54th minute in what turned out to be Lyon B's last goal in a 6–0 rout over Villefranche.
In August 2015, Zeffane joined Ligue 1 club Rennes, signing a four-year contract with the club. On 22 August 2015, he scored the winning goal against his former side Lyon in a 2–1 away win for Rennes.