O Block is an sublocality in Delta III Greater Noida, Greater Noida, Gautam Buddh Nagar District, Uttar Pradesh, India. Delta III Greater Noida (0.0 Km), Beta II Greater Noida (1.78 Km), Delta II Greater Noida (1.84 Km), Alpha II Greater Noida (2.77 Km), Beta I Greater Noida (2.83 Km) are the nearby areas to O Block. Malakpur, Namauli, Rampur Jagir, Eachachhar, Gulistanpur, Noida, Greater Noida, Gujarpur are the nearby cities to O Block.