A washing machine appliance includes a cabinet, a tub positioned within the cabinet, and a basket rotatably mounted within the tub. The basket defines a wash chamber for receipt of articles for washing. The basket is positioned proximate an aperture in the cabinet and, as a result of such positioning, the wash chamber is accessible through the aperture. A door is rotatably mounted to the cabinet. A lock is configured to engage the door and prevent the door from rotating when the door is closed and the lock is locked. A light is mounted to the lock and the light is positioned and oriented to illuminate the wash chamber.