A door opening/closing apparatus automatically opens and closes a door, and the door is supported by a vehicle body such that the door can open and close in a vertical direction. A plurality of link members connect the door and the vehicle body, and at least one of the link members is driven by the drive motor. A drive motor is provided integrally on or within at least one of the link members, and a connection shaft connects the link member having the drive motor and another link member that is adjacent to the former link member. The connection shaft is rotated by the drive motor.