A car door apparatus for an elevator, comprising: a car door for opening and closing a car doorway, having a car-door front surface opposed to a landing door; a door clutch portion provided on the car-door front surface so as to project toward a landing to be brought into engagement with landing equipment; a door-pocket cover includinga cover front-surface portion opposed to the car-door front surface when the car door is fully opened, and a cover side-surface portion extending from the cover front-surface portion to a side opposite to the landing, the cover front-surface portion including a notch portion for allowing the door clutch portion to escape at a time of a door-opening operation; and a closing plate for closing the notch portion when the car door is fully closed, characterised in that, the car-door front surface is provided with a closing-plate supporting portion for supporting the closing plate so that the closing plate is slidable along a direction in which the car door is opened and closed, the door-pocket cover is provided with a closing-plate engagement portion brought into engagement with the closing plate at a time of a door-closing operation to restrict displacement of the closing plate in a door-closing direction relative to the cover front-surface portion, and the closing plate is displaced along with the car door in a door-opening direction to abut against an inner surface of the cover side-surface portion so as to slide in the door-closing direction relative to the car door at the time of the door-opening operation and is displaced along with the car door in the door-closing direction to be brought into engagement with the closing-plate engagement portion so as to slide in the door-opening direction relative to the car door at the time of the door-closing operation. a car door for opening and closing a car doorway, having a car-door front surface opposed to a landing door; a door clutch portion provided on the car-door front surface so as to project toward a landing to be brought into engagement with landing equipment; a door-pocket cover includinga cover front-surface portion opposed to the car-door front surface when the car door is fully opened, and a cover side-surface portion extending from the cover front-surface portion to a side opposite to the landing, the cover front-surface portion including a notch portion for allowing the door clutch portion to escape at a time of a door-opening operation; and a closing plate for closing the notch portion when the car door is fully closed, characterised in that, the car-door front surface is provided with a closing-plate supporting portion for supporting the closing plate so that the closing plate is slidable along a direction in which the car door is opened and closed, the door-pocket cover is provided with a closing-plate engagement portion brought into engagement with the closing plate at a time of a door-closing operation to restrict displacement of the closing plate in a door-closing direction relative to the cover front-surface portion, and the closing plate is displaced along with the car door in a door-opening direction to abut against an inner surface of the cover side-surface portion so as to slide in the door-closing direction relative to the car door at the time of the door-opening operation and is displaced along with the car door in the door-closing direction to be brought into engagement with the closing-plate engagement portion so as to slide in the door-opening direction relative to the car door at the time of the door-closing operation.