A polarizing plate of the invention comprises a polarizer and a protective film laminated on one or both sides of the polarizer with an adhesive layer, wherein the polarizer comprises a film having a structure having a minute domain dispersed in a matrix formed of an optically-transparent water-soluble resin including an iodine based light absorbing material, and the adhesive layer is made of an adhesive that contains a resin curable with an active energy beam or an active material. The polarizing plate has a high degree of polarization even on the short wavelength side and also has good adhesiveness, and has a good durability and can suppress unevenness in transmittance during black viewing.