Considering CuCrO 2 to be a promising p-type transparent conducting oxide, unprecedented simultaneous cationic–anionic doping is carried out to achieve superior hole transport while maintaining its transparency. Magnesium and sulphur are doped at Cr and O-sites respectively by solid-state approach (CuCr 1− x Mg x O 1− y S y, x, y ranging 0–5 atomic%) with significant doping confirmed by Rietveld refinement. UV–Vis spectroscopy is observed to imply promising optical properties of engineered materials. DC conductivity of co-doped CuCr 0.95 Mg 0.05 O 1.9 S 0.1 is observed to be twice as large compared to CuCr 0.95 Mg 0.05 O 2 at 300 K, which is consistent with the lower frequency shift of the negative differential susceptance () and the admittance peak, indicating higher'metallicity'upon co-doping. Hole mobility of 16.26 cm 2 V− 1 s− 1 at 300 K is observed for the co-doped CuCrO 2. This strategy combines an established doping scheme at the cationic site with our newly developed anionic chalcogen doping, aiming to overcome a long-standing transport bottleneck in the field of semiconductor oxides.