A clothes dryer includes a rotatable drum, a drum supporter for supporting the drum, the drum supporter being provided with a discharge port for discharging air from the drum, a circulation channel for guiding the air discharged through the discharge port into the drum, and a filter cartridge disposed in the circulation channel for filtering air, wherein the filter cartridge includes an inside filter cartridge for filtering air discharged from the drum and an outside filter cartridge for filtering air that has passed through the inside filter cartridge, the outside filter cartridge being disposed in the circulation channel, the inside filter cartridge being separably received in the outside filter cartridge through an opening formed in the outside filter cartridge, and wherein the inside filter cartridge is provided with an interference protrusion, and the outside filter cartridge is provided with a restraint protrusion for restraining the interference protrusion.