In this paper, a new application of aperture coupled dielectric resonator as a cell element in design of a dual linear polarized reflectarray at X-band is investigated. The reflectarray has two feed horn antennas, one for each linear polarization. The radiation patterns for each polarization are achieved by adjusting the phase of the reflected wave at each reflectarray element independently for each linear polarization with varying the strip line length. The design is carried out independently for each polarization at 10 GHz. A 441-element reflectarray is designed. The offset feed was used to minimize the feeding blockage and improve the total efficiency. The verification of reflection coefficient phase of cell element is satisfied by CST microwave studio and HFSS software. Maximum gain of 24.6 dB is obtained. The 1.5 dB gain bandwidth of the reflectarray is about 15 %.