To provide a saddle-type vehicle which includes a thermostat device formed by integrating a thermostat with a water temperature sensor and is designed to achieve compact arrangement of an engine and the thermostat device, while preventing reduction in detection accuracy of the water temperature sensor.

The thermostat device 80 is attached to a lateral surface of the cylinder head 24 of the engine 11. The thermostat device 80 includes a thermostat 83 located in a housing 82, a water temperature sensor 84 located in the housing 82 above the thermostat 83, and an air discharge hole 87. The air discharge hole 87 and at least a portion of the water temperature sensor 84 are located above a cooling water flow outlet 42 of the engine 11. At least a portion of the thermostat is located below the cooling water flow outlet 42 of the engine 11.