The present invention relates to an organic light-emitting display device and a method of fabricating the same. The device may include a base substrate, a thin-film transistor disposed on the base substrate, an organic light-emitting device including a first electrode connected to the thin-film transistor, an organic pattern disposed on the first electrode, and a second electrode disposed on the organic pattern. The device further includes an auxiliary electrode including a connection part and a non-connection part, the connection part being connected to the second electrode. The width of the connection part may be less than that of the non-connection part, when measured in the direction perpendicular to a current flow.