Abstract: Disclosed are a casing structure for preventing water penetration and a control panel assembly for a washing machine and a washing machine having the same. Embodiments of the present invention include a water movement drainage part provided at either of a rear edge of a front casing and a front edge of a rear casing that are in contact with each other and having a water guide flow path guiding water received therein to fall outwardly of and away from electrical equipment. Accordingly, the embodiments of the present invention can prevent water from penetrating into the electrical equipment to thereby prevent malfunction or failure thereof and improve the durability of the washing machine appliance while improving the reliability thereof. Furthermore, the embodiments of the present invention simplify the coupling structure of the casings to strengthen the mold used to manufacture the casings and reduce misalignment that may occur at a joint of the casings while increasing the joint strength.