Disclosed are a back plate member for flexible display, a display apparatus including the same, and a method of manufacturing the same, in which a bonding process of bonding a cover glass to a flexible display panel is easily performed. The back plate member includes a back plate including first and second supporting plates which are arranged in parallel with an open part therebetween, a first protective film including a first protection part attached to a bottom of the first supporting plate, a second protection part attached to a bottom of the second supporting plate, and a separation part overlapping the open part, and a second protective film attached to a top of the back plate, the second protective film having a plate shape.