The asymmetric unit of title compound, [Cu(NCS)(C10H8N2)2]ClO4, contains a bis(2,2′-bipyridine)(isothiocyanato)copper(II) cation and a perchlorate anion. In the cation, the Cu2+ ion is coordinated by four N atoms from two bidentate 2,2′-bipyridine molecules and an N atom from an isothiocyanate anion, resulting in a distorted CuN5 pyramidal configuration. The crystal structure is stabilized by weak intermolecular C—H⋯O and C—H⋯S hydrogen bonds, and weak π–π interactions between 2,2′-bipyridine rings [centroid–centroid distance = 3.908 (4) Å]. The perchlorate counteranion is disordered over two positions in a 0.66:0.34 ratio.