Disclosed herein is a structure for mounting a heat exchanger in a vehicle. The structure includes a shroud, and a mount supporting a supported portion and allowing vertical vibrations of the supported portion with respect to each side of the shroud in a vehicle width direction. The supported portion is provided on each side of the heat exchanger in the vehicle width direction. The mount body of the mount is mounted in a mounting portion located higher than a fixed portion on the side of the shroud in the vehicle width direction. The fixed portion is fixed to a body member of the vehicle. A receiver supporting a lower surface of the mount body serves as the mounting portion. A fixing bracket for fixing the mount body to the side of the shroud is provided in front of or behind the mount body of the mount in the vehicle.