In the title coordination polymer, {[NaZn(C(11)H(8)NO(6))(H(2)O)(3)]·2H(2)O}(n), the Zn atom is coordinated in a distorted tetra-hedral environment by three carboxyl-ate O atoms from two (4-carboxyl-atophenyl-imino)diacetate ligands and one water mol-ecule; the Na atom is in an distorted octa-hedral coordination environment formed by four carboxyl-ate O atoms from three (4-carboxyl-atophenyl-imino)diacetate ligands and two water mol-ecules. The Zn atoms and Na atoms are linked by (4-carboxyl-atophenyl-imino)diacetate ligands into a three-dimensional framework; the uncoordinated water mol-ecules fill the voids of the skeleton and stabilize it by O-H⋯O hydrogen bonds.