Regunathapuram is a village in Valangaiman tehsil in district of Thiruvarur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Regunathapuram was 1,205 which includes 622 males and 583 females. Regunathapuram covers 351.16 ha area. Pincode of Regunathapuram is 614401.