Obaiahnahatti is a village in Challakere tehsil in district of Chitradurga, Karnataka, India. As per the data provided by Census of India in 2011, total population of Obaiahnahatti was 1,648 which includes 840 males and 808 females. Obaiahnahatti covers 522.77 ha area. Pincode of Obaiahnahatti is 577436.