Prof.D.Thankappan Nair was born in 1932 at Thiruvananthapuram. He retired as the head of the Hindi department at Bishop Moor college, Mavelikara. He has annotated Kuttavum shikshayum, Avasanathe mohikan, Anna Karenina, Amma, Pavagal, Yudhavum Samadhanavum, Thousand leagues under the sea.
   He has also translated Gurusamaksham-oru Himalayan yogiyude athmakatha, Hridayakamalathinte ratnam-Sanathandharmathinte saswathamulyangal, Hrishiswarante divyadarshanam also.