A deposition mask capable of forming layers with different thicknesses and a method of fabricating the same are disclosed. In one embodiment, the deposition mask includes i) a plurality of regions spaced apart from each other, wherein the plurality of regions comprise at least a first region and a second region and ii) first and second surfaces opposing each other, wherein the first surface is configured to receive a deposition material. Also, a through-hole is defined in each of the plurality of regions, and wherein at least one of the through-holes in the first surface of the mask is divided into a plurality of sub-regions. Further, the number of a sub-region or sub-regions of the first region is different from that of the second region.