Mottaiyanur is a village in Sankarapuram tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Mottaiyanur was 774 which includes 388 males and 386 females. Mottaiyanur covers 910.74 ha area. Pincode of Mottaiyanur is 606207.