The present invention is to provide a laminate that includes a polarizer and a photo alignment film and is excellent in the moisture-heat resistance of the polarizer, a method of producing a laminate, a polarizing plate, a liquid crystal display device, and an organic EL display device including the laminate. The laminate of the present invention includes a polarizer, and a photo alignment film that is adjacently arranged on the polarizer, the photo alignment film is a layer formed by bringing a composition for forming a photo alignment film into direct contact with a surface of the polarizer, and the composition for forming a photo alignment film contains Compound A having a photo-aligned group and Compound B having a crosslinking group, or Compound C having a photo-aligned group and a crosslinking group.