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The title compound, (C4H8N3O)[Cr(C7H3NO4)2]·C7H5NO4·6H2O, was obtained by the reaction of Cr(NO3)3·9H2O with pyridine-2,6-dicarboxylic acid (pydcH2) and creatinine (creat) in aqueous solution (molar ratio 1:2:2). The cation is a protonated creatinine (creatH+) while the anion is a bis-pydc2− CrIII complex. The CrIII is coordinated by four oxygen and two nitrogen atoms of two (pydc)2– groups and has a disorted octahedral coordination environment. The structure also contains a neutral molecule of pydcH2 that is hydrogen bonded to the creatH+ and six molecules of water. Extensive intermolecular interactions, including seventeen classical hydrogen bonds, two weak C—H...O bonds, and C—O...π stacking interactions, with O...centroid distances of 3.211 (13) and 3.300 (12) Å, connect the various components in the crystal structure.