Gangwai Brahman is a village in Haidergarh tehsil in district of Bara Banki, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Gangwai Brahman was 711 which includes 370 males and 341 females. Gangwai Brahman covers 68.46 ha area. Pincode of Gangwai Brahman is N/A.