The dimeric title compound, [Cu(2)(C(9)H(10)N(3)O)(2)(N(3))(2)], is located on a crystallographic inversion center. The Cu atom is coordinated by a tridentate anionic hydrazone ligand and two bridging azide ligands in a distorted square-pyramidal coordination geometry. The non-bonding Cu⋯Cu distance is 3.238 (1) Å. Non-classical inter-molecular C-H⋯N hydrogen bonds link the dimers into chains along the c axis.