The asymmetric unit of the title complex, (C(9)H(15)N(2))(2)[Ni(C(4)N(2)S(2))(2)], comprises one 4-dimethyl-amino-1-ethyl-pyri-din-ium cation and one half of a [Ni(mnt)(2)](2-) (mnt(2-) = maleo-nitrile-dithiol-ate) anion; the complete anion is generated by the application of a centre of inversion. The Ni(II) ion is coordinated by four S atoms of two mnt(2-) ligands and exhibits a square-planar coordination geometry.