To provide an astriding type four-wheeled vehicle capable of preventing a riding space of a rider from being restricted by a shift mechanism and ensuring sufficient riding space.

In this astriding type four-wheeled vehicle 1 constituted in such a way that a shift mechanism 9 is provided and a part of a pair of left and right front wheels 2 capable of steering is covered with a front fender 8, a recessed part 8a is formed in a part of the front fender 8, and the shift mechanism 9 is arranged in the recessed part 8a. Since the shift mechanism 9 is arranged in the recessed part 8a formed in a part of the front fender 8 in this way, the shift mechanism 9 does not restrict a riding space of a rider from positional viewpoint so that the riding space of the rider can be ensured sufficiently.