Thierno Bah (born 5 October 1982 in Labé, Guinea) is a Guinean footballer who currently plays for Saudi Professional League side Al-Taawon FC. Bah is a former Switzerland youth international and represented the Swiss under-21 team. He signed for Lausanne-Sport in January 2011 and left after a year and half at the end of the 2011–2012 season.