A cleaning apparatus includes a cleaning tank in which an object to be cleaned having oil is immersed, a cleaning water supply device that supplies cleaning water from a lower side of the cleaning tank to the inner portion thereof, a recovery device in which an upper end opening is provided at a position that is lower than a liquid surface of the cleaning water supplied to the cleaning tank, and that recovers the cleaning water overflowed due to the cleaning water supplied to the cleaning tank through the cleaning water supply device and the oil floating on the liquid surface of the cleaning water from the opening, and a contact member that is disposed so that an edge of the liquid surface of the cleaning water contacts therewith, and in which the portion contacting the edge of the liquid surface of the cleaning water is formed of glass.