The title compound, also known as sodium nicotinate, Na(+).C(6)H(4)NO(2)(-), consists of two unique Na atoms coordinated to two unique pyridine-3-carboxylate ligands through the N atoms and carboxylate groups. One Na atom and one pyridine-3-carboxylate ligand lie on a twofold axis. Extensive Na coordination results in a three-dimensional array comprising infinite NaO(2)CR chains linked by intrachain Na-N bonds.