Laurent Dufaux (born 20 May 1969 in Montreux, Switzerland) is a former professional road cyclist from 1991 to 2004. He was the Swiss National Road Race champion in 1991. Despite being a climber, he also won the hilly Züri-Metzgete one-day classic in 2000, outsprinting Jan Ullrich and Francesco Casagrande in a flat three-man group sprint finish. Notable results in the Grand Tours include a 4th place overall finish in both the 1996 and 1999 Tour de France and 2nd and 3rd place finishes in the 1996 and 1997 Vuelta a España, respectively. He also won the 1998 edition of his home region race, the Tour de Romandie, the 1993 and 1994 editions of the Dauphine Libere, and finished in the top 5 of the Tour de Suisse twice.

Following the exclusion of his Festina team from the 1998 Tour de France due to doping, Laurent Dufaux admitted to doping (alongside his teammates) with EPO throughout the 1998 season. Together with Festina teammates Alex Zülle, Armin Meier, Didier Rous, Laurent Brochard, all of whom confessed like Dufaux, he received a seven-month suspension.