A motorcycle comprises a vehicle body frame; a front seat including a front seat body section on which a rider is to be seated, and a protruding section protruding rearward from the front seat body section; a rear seat including a rear seat body section on which a passenger is to be seated, and a recessed section which is provided in a front portion of the rear seat body section and opened upward and forward; and a seat lock device mounted to the vehicle body frame. In a state in which a front portion of the rear seat is placed over the vehicle body frame from above, the protruding section of the front seat is accommodated into the recessed section of the rear seat and presses the recessed section from above, and the front seat is locked by the seat lock device.