Theethandapattu is a village in Chengam tehsil in district of Tiruvannamalai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Theethandapattu was 3,318 which includes 1,717 males and 1,601 females. Theethandapattu covers 483.61 ha area. Pincode of Theethandapattu is 606701.