A dishwasher is provided, which can prevent deformation of a filter due to water pressure from occurring, even if the filter is stopped up with dirt. The dishwasher includes a sump that stores washing water, a drainage chamber provided at a side of the sump and linked with a drainage pump, a dirt chamber including a collection pipe that supplies the washing water of the drainage chamber to a dirt storage device, a filter provided above the dirt storage device, that filters the washing water, and a bypass path that links the drainage chamber with the sump, provided to pass through a position higher than the filter.