Abstract: A flat type optical cable is composed of a plurality of optical fiber cords, each including an optical fiber coated with a cord jacket, which are parallel arranged; and a cable jacket which directly coats the cord jackets so that the optical fiber cords are integrated into one optical cable. In the flat type optical cable, the Young's modulus of a coating material forming the cable jacket is lower than the Young's modulus of a coating material forming the cord jacket. Particularly preferably, the Young's modulus of the coating material for forming the cord jacket is in a range of from 9 kg/mm2 to 15 kg/mm2 whereas the Young's modulus of the coating material for forming the cable jacket is in a range of from 4 kg/mm2 to 9 kg/mm2.