The title compound, C7H6BrN3, crystallizes with three independent molecules in the asymmetric unit. The molecules are approximately planar (r.m.s. deviations for all non-H atoms = 0.016, 0.023 and 0.024 Å). The primary amine groups show pyramidal coordination. In the crystal, adjacent molecules are linked by N—H⋯N hydrogen bonds. For two independent molecules, the amine groups are hydrogen-bond donors via one H atom to one acceptor atom, whereas for the third independent molecule, the amine group is a hydrogen-bond donor to two acceptor atoms.