A display installation apparatus and a multi-display including the same are discussed. The display installation apparatus can include a first position setting part inserted into a guide rail to be slidably moved in a first direction, and selectively fixed in a first position in the first direction; a second position setting part positioned at the first position setting part to be slidably moved in a second direction, and selectively fixed in a second position in the second direction; a third position setting part positioned at the second position setting part to be moved in a third direction, and selectively fixed in a third position in the third direction; and a fastening part provided in a display and detachably attached to the third position setting part to install the display into the display installation apparatus.