AbstractAn extension of Hartel's theory for multiple scattering has been applied to the case of small‐angle light scattering from polymer films with random two‐phase morphology. The scattering is treated in terms of Debye–Bueche theory from which values of the correlation length, an average phase size, and mean‐square fluctuation in polarizability are determined. It is shown that multiple scattering leads to a reduction in the angular dependence of scattering due to an enhancement of scattering at high angles. This leads to an underestimate of the correlation length and an overestimate of the magnitude of the mean‐square polarizability fl