An organic light-emitting display apparatus and a method of manufacturing the same are disclosed. An organic light-emitting display apparatus including a substrate, a display unit on the substrate, an encapsulation substrate on the display unit, a sealing member on an edge of the display unit, the sealing member being for bonding the substrate and the encapsulation substrate together, and a filling material filled between the display unit and the encapsulation substrate is disclosed. The filling material has a non-uniform dispersion of fillers such that an amount of the fillers in a first region closer to the display unit is higher than an amount of the fillers in a second region closer to the encapsulation substrate.