Provided are a supercooler and an air conditioner including the same. The supercooler disposed between a condenser and an evaporator of an air conditioner to supercool a refrigerant condensed in the condenser, thereby allowing the supercooled refrigerant to flow into the evaporator includes an inner tube in which a first refrigerant passing through the condenser flows, an outer tube having an inner space in which the inner tube is disposed, the outer tube allowing a second refrigerant heat-exchanged with the first refrigerant to flow by using the inner tube as a boundary, and a baffle supporting the inner tube to prevent the inner tube from being shaken within the outer tube.