An organic light emitting display and method of fabricating the same are provided, such that an organic light emitting display includes a substrate having formed thereon a thin film transistor including a gate electrode, a source electrode, and a drain electrode, a passivation layer formed on the substrate having a contact hole exposing the source or the drain electrode, a first insulating layer pattern formed on a portion of the passivation layer corresponding to an emission region and having a step portion that is higher than the passivation layer on the thin film transistor, a pixel electrode formed on a portion of the passivation layer and on a portion of the first insulating layer pattern that contacts the source or the drain electrode through the contact hole, and a second insulating layer pattern formed on portions of the passivation layer and the pixel electrode that defines the emission region.