In the title complex, [Zn(C(9)H(5)O(6))(2)(C(11)H(10)N(4))(2)]·8H(2)O, the Zn(II) ion exhibits site symmetry 2. It shows a distorted tetra-hedral coordination defined by two N atoms from two symmetry-related 1-[(1H-benzimidazol-2-yl)meth-yl]-1H-imid-azole ligands and by two O atoms from two symmetry-related monodeprotonated 3,5-dicarb-oxy-benzoate anions. In the crystal, complex mol-ecules and solvent water mol-ecules are linked through inter-molecular O-H⋯O, O-H⋯N, and N-H⋯O hydrogen bonds into a three-dimensional network.