The title compound, {[Cd(3-apz2)]I2}n consists of a Cd2+ cation, iodine anions balancing the charge and bridging 3-aminopyrazole (3-apz) molecules. The Cd2+ cations are coordinated by two iodine anions and two apz ligands, generating trans-CdN4I2 octahedra, and are linked into chains by pairs of the bridging ligand. In the crystal structure, the apz ligands and iodide anions of neighboring chains are linked through interchain hydrogen bonding into a two-dimensional supramolecular network.