A method of manufacturing an organic light-emitting display apparatus including preparing a mother substrate that includes a plurality of display areas; forming a plurality of pixel electrodes on each of the display areas of the mother substrate; preparing a donor mask that includes a base substrate having a plurality of display transferring areas corresponding to the plurality of display areas, the base substrate including a groove between the display transferring areas, a light-to-heat conversion layer on the base substrate, and a reflective layer between the base substrate and the light-to-heat conversion layer and being patterned to include through holes in each of the display transferring areas; depositing a transferring layer on the light-to-heat conversion layer of the donor mask; aligning the mother substrate and the donor mask; and transferring portions of the transferring layer that overlie the through holes onto the pixel electrodes on the mother substrate.