A laser processing apparatus includes a laser beam generating unit which emits a laser beam, a lens unit which divides the laser beam into a plurality of laser beams, and a light condensing unit which condenses the plurality of laser beams. The lens unit includes a first lens array having a first central axis and a second lens array having a second central axis, and wherein at least one of the first lens array and the second lens array reciprocates such that the first central axis and the second central axis are deviated from each other.