AIR INTAKE DUCT FOR SADDLE-RIDDEN VEHICLE

An air intake duct (70) of a motorcycle extends rearwardly from a front portion of a motorcycle body so as to pass laterally of the left side of a motorcycle frame structure (FR), and incoming wind (A) is supplied as an intake air (I) through the air intake duct (70) to a combustion engine (E). The air intake duct (70) is divided in a widthwise direction of the motorcycle. An upper dividing face (94) of the air intake duct (70) is disposed inward of an intermediate position, in a motorcycle widthwise direction, of the air intake duct (70).