Xavier de Rosnay
Birthday: 7/2/1982
Gender: Male
Place Of Birth: Ozoir-la-Ferrière, Seine-et-Marne, France

Xavier Dulong de Rosnay (born July 2, 1982 in Brou-sur-Chantereine, Seine-et-Marne) is one of the two members of the French electronic music duo Justice with Gaspard Augé.