The viewing zones in the conventional dual-viewing-zone three-dimensional (3D) display are still narrow. We propose a dual-viewing-zone 3D display that consists of a display panel, a parallax barrier, and a barrier array. The adjacent slits are separated by the barrier. Two adjacent elemental images that are respectively obtained from two 3D scenes are located between two adjacent slits. The light rays from two adjacent elemental images that are alternatively arranged in the horizontal direction are only integrated by a slit. The light rays from the left elemental images are propagated into the left viewing zone, whereas those from the right elemental images are propagated into the right one. Different 3D images are reconstructed in the left and right viewing zones. The experimental results prove that two viewing zones are both enlarged in the proposed dual-viewing-zone 3D display.