Jérôme Grosset-Janin (born 19 June 1984) is a French rallycross driver from Sallanches, Haute-Savoie.

In 2014, he piloted a Clio in the British round of the FIA European Rallycross Championship and finished sixth overall in the heats.

Grosset-Janin raced in the World Rallycross Championship for GC Kompetition behind the wheel of a Renault Megane RX.

For the 2019 season, Grosset-Janin entered the TitansRX championship at the wheel of the single-design PanteraRX6 Supercar.

This past year, Grosset-Janin has been working alongside Mercedes Benz Etoile Mont Blanc as an ambassador.