The title compound, [Nd(OH)(SO(4))](n), was obtained hydro-thermally from an aqueous solution of neodymium nitrate, 1,2-propane-diamine and sulfuric acid. The structure features nona-coordinated neodymium with sulfate and hydroxide anions acting as bridging ligands. The OH group forms a weak O-H⋯O hydrogen bond with an O⋯O distance of 3.224 (5) Å.