A display apparatus may include a display panel and a plurality of flexible printed circuit boards connected to the display panel. The display panel may include first regions arranged in a first direction and may include a plurality of first alignment marks, which are respectively provided on the first regions and are arranged in the first direction. Each of the flexible printed circuit boards may include a plurality of second alignment marks arranged in the first direction and overlapped with the first alignment marks, an insulating layer spaced apart from the second alignment marks in a second direction crossing the first direction, and a plurality of supplementary alignment marks spaced apart from the second alignment marks by a first distance in the second direction, the supplementary alignment marks being openings defined in the insulating layer.