An organic layer deposition apparatus, a method of manufacturing an organic light-emitting display apparatus by using the same, and an organic light-emitting display apparatus manufactured using the method. The organic layer deposition apparatus includes a conveyer unit including first and second conveyer units, loading and unloading units, and a deposition unit. A transfer unit moves between the first and second conveyer units, and the substrate attached to the transfer unit is spaced from a plurality of organic layer deposition assemblies of the deposition unit while being transferred by the first conveyer unit. The organic layer deposition assemblies include common layer deposition assemblies and pattern layer deposition assemblies.