Thenmavanthal is a village in Cheyyar tehsil in district of Tiruvannamalai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thenmavanthal was 570 which includes 279 males and 291 females. Thenmavanthal covers 164.28 ha area. Pincode of Thenmavanthal is 604404.