Budnai 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 Budnai was 2,373 which includes 1,194 males and 1,179 females. Budnai covers 227.01 ha area. Pincode of Budnai is N/A.