Abstract

The optical linear polarization of 99 Seyfert galaxies has been measured. Several highly polarized objects have been discovered and are discussed elsewhere. However, most Seyferts have very little polarization (approximately equal to or less than 0.5%) and much of this might be produced by foreground dust in the Galaxy; thus the occurrence of substantial intrinsic polarization is quite rare. Some significant similarities and differences between Seyfert and QSO polarization are discussed. A few measurements for narrow emission line galaxies are also presented.