Abstract: Provided is a method for manufacturing polarized glass, comprising forming a glass preform by melting glass that includes metal ions and halogen ions and then depositing metal halide particles in the glass in which the metal ions and the halogen ions are dispersed; forming a glass sheet containing extended metal halide particles that are obtained by extending the metal halide particles by performing thermal drawing on the glass preform at a prescribed temperature; annealing by heating the glass sheet to a temperature that is no greater than a transformation temperature of the glass and no less than a distortion temperature of the glass; and reducing the extended metal halide particles in the glass sheet that has undergone said annealing into extended metal particles. The glass preform formed in said forming a glass preform has a haze between 0.3% and 1.3% with respect to light in a wavelength region passed by a G filter.