Kilavadinatham is a village in Chidambaram tehsil in district of Cuddalore, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kilavadinatham was 734 which includes 369 males and 365 females. Kilavadinatham covers 123.69 ha area. Pincode of Kilavadinatham is 608601.