AbstractApplications of both polarized and depolarized dynamic light scattering to the study of polymers are described. Polarized light scattering is used to study translational diffusion, diffusion virial coefficients, rotational motion of long rod‐shaped polymers, long‐wavelength intramolecular motions, dynamics of pseudogels and gels and density fluctuations in bulk polymers. Depolarized scattering is used to study rotational diffusion of rigid macromolecules, local and long‐wavelength intramolecular motions, dynamics in semi‐dilute solutions, rotational motions of small molecules in glassy polymers and optical anisotrophy fluctuations of bulk p