A foldable device includes: a flexible display including: a first part; a second part; and a third part provided between the first and second parts; a first body supporting the first part; and a second body supporting the second part, each of the first and second body are configured to move between a first and a second position, in response to each of the first and second bodies being provided in the first position, the first body and the second body form a receiving space, the third part forms a curved portion of the flexible display and the curved portion is provided within the receiving space, and wherein the first part is configured to move in a longitudinal direction of the flexible display with respect to the first body in response to the first and second bodies moving between the first and second positions.