Guillaume Lacour (born 2 August 1980) is a French former professional footballer who played as a midfielder. He joined Évian from RC Strasbourg in July 2010, following an eight-year stint where he appeared in more than 200 league matches. While at Strasbourg Lacour played as they won the 2005 Coupe de la Ligue Final. Lacour finished his playing career with AS Troyes.