The　title　coordination　polymer,　[Ag2(C10H4O8)(C12H9N3)2]　n　,　was　prepared　by　a　hydro-thermal　method.　The　AgI　atom　exists　in　a　strongly　distorted　trigonal　coordination　environment.　Two　AgI　ions　related　by　an　inversion　centre　are　coordinated　by　two　2-(3-pyrid-yl)benzimidazole　ligands,　forming　a　centrosymmetric　cyclic　dimer.　The　bridging　bidentate　2,5-dicarboxy-benzene-1,4-dicarboxyl-ate　ligand　is　also　located　on　an　inversion　centre　and　connects　the　binuclear　units,　generating　a　one-dimensional　polymer.　The　almost-planar　conformation　of　this　ligand　allows　it　to　form　a　strong　intra-molecular　O　-　H⋯O　hydrogen　bond.　Finally,　inter-molecular　N　-　H⋯O　hydrogen　bonds　aggregate　the　chains　into　a　three-dimensional　framework.