An organic light-emitting display apparatus includes: a plurality of dummy pixels including a dummy pixel circuit; a plurality of pixels including a first pixel including: a light-emitting element configured to emit light in response to a driving current supplied from the dummy pixel circuit; and a pixel circuit separated from the light-emitting element; a plurality of voltage lines configured to apply a power voltage to a power node of a second pixel; and a plurality of repair lines including: a first repair line coupling the dummy pixel circuit and the light-emitting element and configured to transfer to the light-emitting element the driving current supplied from the dummy pixel circuit; and a second repair line coupling the dummy pixel circuit and the power node of the second pixel and configured to apply to the dummy pixel circuit the power voltage that is applied to the power node.