A multi-display device includes a main frame, a plurality of module supporters disposed on the main frame, a plurality of display modules which are hung on the plurality of module supporters, and a spacer positioned between the two adjacent display modules. Each of the plurality of display modules includes a display panel. The spacer includes a base plate extending in a width direction of the display modules, a first protrusion extending from a first surface of the base plate, and a second protrusion extending from a second surface opposite the first surface of the base plate. The base plate includes a portion which protrudes further than the two adjacent display modules in the width direction of the display modules.