An organic light emitting display apparatus includes first to eighth pixels arranged in a 4*2 matrix form along first and second directions, and includes a camera which is configured to take a picture. Each of the first to eighth pixels has a width in the first direction and has a length in the second direction. Each of the first to eighth pixels has a light emitting structure and a first mirror pattern which defines an opening which overlaps the light emitting structure. The first mirror pattern defines one transmission window in every two or more pixels adjacent each other, the transmission window passes light, and the camera is configured to take a picture through the transmission window.