A clothes dryer having an improved configuration to allow a user to safely pull out a water tank is disclosed. The clothes dryer includes a body having a water tank housing, a water tank detachably mounted into the water tank housing and serving to store water collected from an object to be dried, and a safety guide to limit movement of the water tank in a first direction when the water tank is separated from the water tank housing in the first direction, so as to allow a user to guide movement of the water tank in a second direction. The safety guide includes a first stopper provided at the water tank housing, and a second stopper provided at the water tank to correspond to the first stopper when the water tank is separated in the first direction.