A cooling apparatus includes a cold plate including a lower surface to be in contact with a heat-radiating component, and a first coolant passage in which a coolant flows, a radiator including fins to perform cooling, and a second coolant passage in which the coolant flows, and a pump connected to each of the first coolant passage and the second coolant passage to circulate the coolant. The radiator is provided on the cold plate. The pump is adjacent to the radiator.