Based on the charge balance, trivalent dysprosium doped Cd_1-xTa₂O₆:xDy³⁺ (x=0.5, 1, 2, 3, 5 at%) phosphor series was fabricated by solid state reaction route at 1100 °C for 8 h. The synthesized phosphors were investigated by XRD (X-ray diffraction), SEM (scanning electron microscopy), and PL (photoluminescence) analyses. XRD and SEM analyzes revealed the orthorhombic colombite crystal structure and the presence of oval-like and shapeless morphology with submicron and several micron grain sizes, respectively. With the excitation of 387.8 nm, the phosphors exhibited blue and yellow emissions at 482.4 nm and 578.5 nm depending on the ⁴F_9/2→⁶H_15/2 and ⁴F_9/2→⁶H_13/2 transitions of Dy³⁺, respectively. The emission intensity of cadmium tantalate phosphor increased with increasing Dy³⁺ concentration up to x=5 at% value, and did not occurred the concentration quenching which reduces emission intensity. The reason why concentration quenching did not occur can be attributed to the reduction of structural defects due to the improvement in charge balance and the reduction of the conversion of excitation energy to nonradiative transitions. The Commission Internationale d’Eclairage (CIE) coordinates of Cd_1-xTa₂O₆:xDy³⁺ (x=0.5, 1, 2, 3, 5 at%) phosphors were found near the white region in the chromaticity diagram.