International Journal of Neutrosophic Science IJNS 2690-6805 2692-6148 10.54216/IJNS https://www.americaspg.com/journals/show/3316 2020 2020 Department of Mathematics, Women Section, King Saud University, Riyadh 12372, Saudi Arabia Samer Samer Department of Mathematics and Statistics, Jordan University of Science and Technology, Irbid 22110, Jordan Samer Al Al-Ghour The object of the present paper is to introduce a new class of soft functions called soft regular-closed functions. This class contains the class of soft closed functions. Numerous theorems that give properties of such soft functions are presented. Moreover, sufficient conditions for a soft function to be soft regular-closed are given. In addition, several preservation theorems of soft separations axioms using soft regular-closed are given. Finally, the correspondence between this class of soft functions and the class of regular-closed functions in classical topology is studied. 2025 2025 435 449 10.54216/IJNS.250337 https://www.americaspg.com/articleinfo/21/show/3316