Barnali Laha, Slant and Hemislant Submanifolds of a 3-Dimensional Indefinite Trans-Sasakian Manifold, BSMaSS Volume 15, The Bulletin of Society for Mathematical Services and Standards (Volume 15) https://www.scipress.com/BSMaSS.15.10 Abstract: In this paper we would like to establish some of the properties of slant and hemislant submanifoldsof an indefinite trans-Sasakian manifold. We have four sections in this paper. Section (1) isintroductory. In Section (2) we recall some necessary details of an indefinite trans-Sasakian manifold.In Section (3) we have obtained some interesting properties on a totally umbilical slant submanifoldsof an indefinite trans-Sasakian manifold. Finally, in Section (4), some results on integrability conditionsof the distributions of hemislant submanifolds of an indefinite trans-Sasakian manifold havebeen obtained. Keywords: Hemislant Submanifold, Indefinite Trans-Sasakian Manifold, Slant Submanifold