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The title six-coordinated distorted octahedral complex, [Cu(C6H3N2O4)2(C10H8N2)]·2H2O, consists of two 3-carboxypyrazine-2-carboxylate anions and one 2,2′-bipyridine ligand. There is a twofold rotation axis positioned at the CuII center. The N atoms of the pyrazine ring occupy the axial positions and two proton-transferred O atoms of tbe acid together with the two N atoms of the 2,2′-bipyridine ligand complete the equatorial plane. The interactions existing in the crystal structure are intermolecular O—H...O hydrogen bonds, and C—H...O and C—O...π interactions (O...π =3.145 Å, C—O...π = 149.75°).