Mehdi Mostefa Sbaa ( born 30 August 1983) is an Algerian professional footballer who plays as a defensive midfielder for Béziers. At international level, he represented Algeria.
On June 6, 2011, Mostefa signed a two years contract with newly promoted Ligue 1 side AC Ajaccio.
On August 7, 2014, Mostefa moved to FC Lorient for a three years contract because he's interested with the club project.
On October 30, 2010, Mostefa was called up to the Algerian national team by head coach Abdelhak Benchikha for a friendly against Luxembourg. He made his debut in that game as a starter, before being substituted off in the 69th minute. On March 26, 2011, Mostefa played his first official match for Algeria in a 2012 Africa Cup of Nations qualifier against Morocco. He played the entire match as Algeria went on to win 1-0.