Marion Rousse (born 17 August 1991) is a French former racing cyclist. She won the French national road race title in 2012. She announced her retirement from racing in October 2015.
Rousse married fellow racing cyclist and Tour de France stage winner Tony Gallopin in October 2014. She is the cousin of racing cyclists David Lefèvre, Laurent Lefèvre and Olivier Bonnaire. Outside racing, Rousse has also worked as a pundit for Eurosport.