The Roumois (French: [ʁumwa]) is a region in the northwestern part of the Eure département in Normandy, France. It is a plateau situated southwest of Rouen. Its northern boundary is the Seine downstream of Elbeuf, its western boundary is the Risle valley. The plain of Le Neubourg lies to the south. The main towns of the Roumois are Bourg-Achard and Bourgtheroulde-Infreville. The landscape is similar to that of the Pays de Caux on the north side of the Seine.
The economy is mainly based on agriculture, but it is also influenced by the nearby Rouen agglomeration.
- "Roumois". Encyclopédie Méthodique: géographie (in French). 3. Panckoucke. 1788. p. 49. Retrieved 25 July 2017.
- Lajoye, Patrice (2007). "L'évolution du nom de Rouen dans l'Antiquité et au Haut Moyen Âge en domaines celtique, latin et germanique". Annales de Normandie (in French). 57 (3): 223–229. doi:10.3406/annor.2007.1618. Archived from the original on 25 July 2017. Retrieved 25 July 2017.