Grégory Jean-Paul Lemarchal, known professionally as Grégory Lemarchal, was a French singer who rose to fame by winning the fourth series of the reality television show Star Academy, which was broadcast on the TF1.

Star Academy is a French reality television. It was produced by the Dutch company Endemol. It consists of a contest of young singers. It spawned an equally successful show in Canada called Star Académie. It was broadcast on TF1 and NRJ 12 (2012-2013). At the end of each season, selected contestants would go on tour around France : Morocco, Switzerland, Belgium, Tunisia, and other French-speaking countries.