An integrated coolant heating module for a vehicle includes a water-cooled condenser having a plurality of refrigerant inlet/outlet ports and a plurality of coolant inlet/outlet ports, and exchanging heat between coolant and refrigerant that circulate therein, a water heater having a plurality of mounting parts, the water heater being coupled to the water-cooled condenser and selectively heating the coolant passing through the water-cooled condenser, a multi-way valve coupled to a mounting part of the water heater, and controlling a direction of flow of the coolant, and a water pump coupled to a mounting part of the water heater, having a first side connected to the multi-way valve and a second side connected to a second coolant inlet/outlet port of the water-cooled condenser, and creating a pressure of the coolant between the multi-way valve and the water-cooled condenser.