An organic light-emitting display apparatus includes a plurality of pixels provided on a substrate, wherein each of the plurality of pixels includes: a first sub-pixel area for emitting light of a first color; a second sub-pixel area for emitting light of a second color different from the first color; a third sub-pixel area for emitting light of a third color different from the first and second colors; and a transmission area through which external light transmits, wherein the first through third sub-pixel areas and the transmission area are sequentially arranged on the substrate in a first direction.