The present invention relates to a height adjustable wheelchair docking system adapted for releasably securing a wheelchair to the floor of a transport vehicle comprising: a) a base frame with an open end, and adapted for rigid attachment to the floor of a transport vehicle； b) a middle frame adapted for sliding back and forth in a horizontal direction within the base frame and through the open end； c) means configured to slide the middle frame in relation to the base frame； and d) a top frame adapted for covering at least a part of the base frame and middle frame, and adapted to move up and down in a vertical direction in relation to the base frame when the middle frame is sliding back and forth in a horizontal direction within the base frame and through the open end. The top frame further comprises a female or male docking fixture adapted for locking engagement with a male or female docking fixture on a wheelchair.
