The title compound, {(C₄H₁₂N)₂[PbI₃]I·2H₂O}_n, crystallizes as an organic–inorganic hybrid. The six-coordinate Pb atom lies on a centre of inversion and all the I atoms lie on mirror planes; the two independent cations both lie across mirror planes. The structure contains anionic chains along [100] of fused [PbI₃]⁻ units forming face-sharing octa­hedra. Four cations enclose channels occupied by isolated iodide ions and water mol­ecules of hydration.