Melavanniyur is a village in Kattumannarkoil tehsil in district of Cuddalore, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Melavanniyur was 1,151 which includes 581 males and 570 females. Melavanniyur covers 154.93 ha area. Pincode of Melavanniyur is 608302.