An organic light-emitting display apparatus and a method of manufacturing the same are disclosed. The organic light-emitting display apparatus includes: an active layer formed on a substrate, a gate electrode including: a first gate electrode layer insulated from the active layer and including a semi-transmissive conductive material, a second gate electrode layer formed on the first gate electrode layer configured to protect the first gate electrode layer, a third gate electrode layer formed on the second gate electrode layer and including a transparent conductive material, and a fourth gate electrode layer formed on the third gate electrode layer and including a conductive material, a pixel electrode including: a first electrode layer formed in the same layer level as the first gate electrode layer and including a semi-transmissive conductive material, a second electrode layer formed on the first electrode layer configured to protect the first electrode layer, a third electrode layer formed on the second electrode layer and including a transparent conductive material, and a fourth electrode layer formed on the third electrode layer and including a conductive material, source and drain electrodes insulated from the gate electrode and electrically connected to the active layer and the pixel electrode, an intermediate layer formed on the pixel electrode and including an organic light-emitting layer, and an opposite electrode formed on the intermediate layer.