International Journal of Neutrosophic Science IJNS 2690-6805 2692-6148 10.54216/IJNS https://www.americaspg.com/journals/show/714 2020 2020 Department of Mathematics, Faculty of Arts and Sciences, Kastamonu University, Turkey Hasan Dadas Department of Mathematics, Faculty of Arts and Sciences, Kastamonu University, Turkey Sibel Demiralp   In this study, the concept of neutrosophic soft tri-topological space is defined as a generalization of neutrosophic soft bitopological space. Then neutrosophic soft tri-open and tri-closed sets are defined and in this space. Also, some basic properties of these new types of open and closed sets are investigated and supported by many examples to further clarify the study.   2021 2021 77 88 10.54216/IJNS.150202 https://www.americaspg.com/articleinfo/21/show/714