A refrigeration cycle apparatus (1a, 1b, 1c, 1d) comprising: an evaporator that stores a refrigerant liquid and that evaporates the refrigerant liquid to generate a refrigerant vapor, the refrigerant liquid being a refrigerant in a liquid phase, the refrigerant vapor being the refrigerant in a vapor phase; a first compressor that compresses the refrigerant vapor generated in the evaporator; an intercooler that cools the refrigerant vapor compressed by the first compressor; a second compressor that compresses the refrigerant vapor cooled by the intercooler; a condenser that condenses the refrigerant vapor compressed by the second compressor to generate a refrigerant liquid and that stores the refrigerant liquid generated in the condenser; and a refrigerant liquid supply passage in which the refrigerant liquid stored in the condenser flows from the condenser to the evaporator, wherein the intercooler includes: a container that contains a vapor space therein for receiving the refrigerant vapor compressed by the first compressor and that stores a refrigerant liquid; an intercooling passage in which a part of the refrigerant liquid stored in the container flows and that supplies the part of the refrigerant liquid stored in the container to the vapor space; and a pump that is disposed on the intercooling passage and that pumps the part of the refrigerant liquid stored in the container to the vapor space, and the intercooler makes the refrigerant liquid stored in the container directly contact the refrigerant vapor compressed by the first compressor to cool the refrigerant vapor compressed by the first compressor, characterized in that the refrigerant liquid supply passage includes a first refrigerant channel in which the refrigerant liquid discharged from the condenser flows and that supplies the refrigerant liquid discharged from the condenser into the container, and a second refrigerant channel in which a part of the refrigerant liquid stored in the container flows and that supplies the part of the refrigerant liquid to the evaporator. an evaporator that stores a refrigerant liquid and that evaporates the refrigerant liquid to generate a refrigerant vapor, the refrigerant liquid being a refrigerant in a liquid phase, the refrigerant vapor being the refrigerant in a vapor phase; a first compressor that compresses the refrigerant vapor generated in the evaporator; an intercooler that cools the refrigerant vapor compressed by the first compressor; a second compressor that compresses the refrigerant vapor cooled by the intercooler; a condenser that condenses the refrigerant vapor compressed by the second compressor to generate a refrigerant liquid and that stores the refrigerant liquid generated in the condenser; and a refrigerant liquid supply passage in which the refrigerant liquid stored in the condenser flows from the condenser to the evaporator, wherein the intercooler includes: a container that contains a vapor space therein for receiving the refrigerant vapor compressed by the first compressor and that stores a refrigerant liquid; an intercooling passage in which a part of the refrigerant liquid stored in the container flows and that supplies the part of the refrigerant liquid stored in the container to the vapor space; and a pump that is disposed on the intercooling passage and that pumps the part of the refrigerant liquid stored in the container to the vapor space, and a container that contains a vapor space therein for receiving the refrigerant vapor compressed by the first compressor and that stores a refrigerant liquid; an intercooling passage in which a part of the refrigerant liquid stored in the container flows and that supplies the part of the refrigerant liquid stored in the container to the vapor space; and a pump that is disposed on the intercooling passage and that pumps the part of the refrigerant liquid stored in the container to the vapor space, and the intercooler makes the refrigerant liquid stored in the container directly contact the refrigerant vapor compressed by the first compressor to cool the refrigerant vapor compressed by the first compressor, characterized in that the refrigerant liquid supply passage includes a first refrigerant channel in which the refrigerant liquid discharged from the condenser flows and that supplies the refrigerant liquid discharged from the condenser into the container, and a second refrigerant channel in which a part of the refrigerant liquid stored in the container flows and that supplies the part of the refrigerant liquid to the evaporator.