In the title complex, [Cu(CH(5)N(3)S)(2)(NCS)], the non-H part of the mol-ecule is strictly planar, lying on the mirror plane at y = 0.25. The Cu atom lies at the centre of a triangle formed by the coordination of three monodentate groups, viz. two thio-semicarbazide ligands and one NCS(-) anion. Weak inter-molecular N-H⋯S inter-actions generate a two-dimensional network.