"Sans contrefaçon" is a 1987 song recorded by French artist Mylène Farmer. It was released on 16 October 1987 as the first single from her second studio album, Ainsi soit je.... It was a big hit in 1987 and is one of her three best-selling singles. It became a very popular song in France over the years and has been covered by many artists. A remixed version by the DJ J.C.A. was released on 5 August 2003 as the first single from the compilation album called RemixeS.

Mylène Jeanne Gautier, known professionally as Mylène Farmer, is a French singer and songwriter. Having sold more than 30 million records worldwide, she is among the most successful recording artists of all time in France, where she holds the record for the most number one hit singles, with twenty-one – eight of which were consecutive.