A polarizing plate, which includes at least a polarizer layer including an iodine-dyed polyvinyl alcohol film, and the polarizing plate including a compound with a bond dissociation energy E1 of less than or equal to 90.0 kcal/mol, a peroxide radical forming energy E2 of less than or equal to 0.0 kcal/mol, and a polyiodide ion I5− forming ability in an iodide compound-containing solution of less than or equal to 1.0.