Romain Feillu (born 16 April 1984 in Châteaudun, Eure-et-Loir) is a French road racing cyclist who rides for UCI Professional Continental team Fortuneo–Oscaro. He is the older brother of Brice Feillu, who is also a road racing cyclist.

In August 2005, Feillu joined Agritubel as a trainee (stagiaire) and impressed his team managers, resulting in a professional contract. During the 2006 season he won the Grand Prix Tours as well as the overall rankings of the Tour de la Somme. In 2007 he won a stage in the Tour de Luxembourg and the Circuit de l'Aulne. In that year he also made his Tour de France debut finishing three times in the top 10 in mass sprints. He withdrew after stage 8, which was the second mountain stage. Later that year he won the Tour of Britain and the late season Paris–Bourges.

At the end of the 2009 season, he won the Grand Prix de Fourmies. He won this race again in 2010.

Feillu joined Bretagne–Séché Environnement for the 2014 season, after his previous team – Vacansoleil–DCM – folded at the end of the 2013 season.