In the title complex, [Cu(C(21)H(14)NO)(2)], the Cu(II) atom, lying on an inversion center, is coordinated by two bidentate 1-(2-naphthyl-imino-meth-yl)-2-naphtholate ligands in a trans arrangement, forming a slightly distorted square-planar coordination geometry. The mean planes of two naphthyl systems of the ligand make a dihedral angle of 40.32 (11)°.