An organic light emitting display device includes a first substrate, a plurality of organic light emitting devices on the first substrate, a second substrate arranged opposite and substantially parallel to the first substrate with the organic light emitting devices therebetween, a plurality of spacers between the organic light emitting devices and the second substrate, and a plurality of fillers alternately arranged with the spacers and configured to fill in space between the first substrate and the second substrate, wherein at least portions of the spacers overlap with a plurality of light emitting regions corresponding to the organic light emitting devices. The spacers and fillers are composed of transparent materials having refractive indexes similar to each other so that visibility and image quality are not lowered and the distance between the substrates is substantially constant.