A clothing dryer is provided having improved blowing fan, fan casing, and motor bracket fixing structures. The clothing dryer includes a housing forming the appearance of the clothing dryer, a drying tub rotatably mounted in the housing, a blowing fan to discharge air out of the drying tub, a fan casing to guide the flow of air around the blowing fan, a driving motor to rotate the blowing fan, a motor bracket to support the driving motor, and a fixing part to temporarily fix the blowing fan to the fan casing when fixing units, by which the blowing fan is attached to a driving shaft of the driving motor, are loosened and tightened.