Provided is a power seat operation device configured so that movable mechanisms can be selectively operated and so that a movable mechanism which rotates and moves a movable section can be intuitively operated without impairing the intuitive nature of operation of a movable mechanism which linearly moves a movable section. A power seat operation device (100) is configured in such a manner that, when a dial member (128) is rotated and operated, a movable mechanism which is to be operated is selected from among movable mechanisms. When a switch member (130) is rotated and operated, the selected movable mechanism is actuated. Also, the switch member (130) is rotated and operated about a rotation axis (H) extending in the widthwise direction of the seat. This means that the direction of operation of the switch member (130) can be aligned with or nearly aligned with both the direction of the actual movement of a seat back (120) when a recliner mechanism (122) is actuated and the direction of the actual movement of an ottoman (124) when an ottoman mechanism (126) is actuated. Also, in a state in which a seat slide mechanism (108) is selected, the direction of the operation of the switch member (130) is aligned with the front-rear direction of the seat.