Lamouchi was capped 12 times and scored one goal for the French national team. He made his debut in 1996 and was a member of the French European Championship squad the same year. He was in France's 28 men-preliminary squad for the 1998 FIFA World Cup on home soil. However he was one of the six players axed by head coach Aimé Jacquet just before the tournament began. The team went on to win the tournament.