Abstract:In this paper, we extend the rough set model on two different universes in intuitionistic fuzzy approximation spaces to a single-valued neutrosophic environment. Firstly, based on the (α, β, γ)-cut relation R {(α,β,γ)} , we propose a rough set model in generalized single-valued neutrosophic approximation spaces. Then, some properties of the new rough set model are discussed. Furthermore, we obtain two extended models of the new rough set model-the degree rough set model and the variable precision rough set model-and study some of their properties. Finally, we explore an example to illustrate the validity of the new rough set model.