A display device includes: a display module having a first non-foldable region, a second non-foldable region, and a foldable region disposed between the first non-foldable region and the second non-foldable region and being foldable about a folding axis extending in a first direction; and a barrier layer disposed adjacent the display module and including: a first portion having a first region overlapping the first non-foldable region, a second region overlapping the foldable region, and a third region overlapping the second non-foldable region; and a second portion extending from at least a portion of the second region of the first portion in the first direction.