Provided is a hydraulic clutch device capable of securing sufficient performance (oil filtration performance) of a filter for cleaning oil while avoiding an increase in size of the device. The hydraulic clutch device includes an oil pump, a pressure regulating valve which pressure-regulates oil discharged by the oil pump, and a hydraulic clutch engaged by the oil pressure-regulated by the pressure regulating valve, wherein the pressure regulating valve is disposed on a downstream side in an oil flow direction of the hydraulic clutch, and a filter is disposed between a piston chamber of the hydraulic clutch and the pressure regulating valve. The filter is attached to be accommodated in an accommodating portion formed by recessing an inner surface of the piston chamber from the inside of the piston chamber.