In the title compound, C(13)H(7)ClN(4), the imidazopyridazine ring system is essentially planar [maximum deviation 0.015 (1) Å]. It is inclined to the benzene ring of the benzonitrile group by 11.31 (2)°. In the crystal, molecules are linked via C-H⋯Cl and C-H⋯N interactions.