Udayanatham is a village in Udayarpalayam tehsil in district of Ariyalur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Udayanatham was 3,547 which includes 1,733 males and 1,814 females. Udayanatham covers 595.03 ha area. Pincode of Udayanatham is 612903.