AbstractIn this article, we introduced the notions of NjmX-semi-open sets, semiinterior and semi-closure operators in neutrosophic biminimal structures. We investigate some basic properties of such notions. Also, we introduced the notion of NjmX-semicontinuous maps and study characterizations of NjmX-semi-continuous maps by using the semi-interior and semi-closure operators in neutrosophic biminimal structures.