Sitheri Hills is a hill station in Dharmapuri District located in Tamil Nadu, India. This hills harbouring rich variety plants and animals. It is situated at an altitude of 1097.3m (3600ft). The Sitheri hills comprise various kinds of vegetations. Pteridophytes are the common group among the plant kingdom available along with angiosperms in considerable number in those hills. In this present study reports that 42 species of Pteridophytes which includes terrestrials, aquatic and epiphytic forms. Psilotum nudum, Huperzia sps, Actiniopteris radiata, etc are important species in this list. In this surveyed species most of them determined to rare limited in distribution. Therefore more habitat protection is suggested for conservation of fern flora in Sitheri hills.