An optical information recording medium contains at least an optical reflective layer, an optical recording layer, a protective layer, and an optical transparency layer formed in this order on a main surface of a substrate, and has a main-information area and a sub-information area that contains an optically readable mark. The mark is constituted by removing at least the optical reflective layer in a bar cord pattern and then forming a next layer in the order over the bar cord-patterned layer.