In the title compound, [Ag(C(6)H(9)N(3)O(3))(2)]NO(3), the Ag atom is bicoordinated in a distorted linear configuration by two 1-(2-hydroxy-ethyl)-2-methyl-5-nitro-imidazole ligands through one of the N atoms. The dihedral angle between the two imidazole rings is 16.1 (2)°. The O atoms of the nitrate anion are disordered over two positions; the site occupancy factors are 0.8 and 0.2. The ions are -connected by C-H⋯O inter-actions, while two weak intra-molecular C-H⋯O inter-actions producing an S(6) ring motif are observed. The nitrate anion is linked to the hydroxyl groups of two neighbouring cations by O-H⋯O hydrogen bonds. The ions are packed into infinite chains along the [100] direction.