Krishnasamy was born in a middle-class family at kudimangalam, Udumalpet (TK) in Tiruppur district of Tamil Nadu.Dr krishnasamy finished his schoolings in Government High School Pulavadi. He holds M.B.B.S degree and masters graduate degree in Medical Science from Coimbatore Medical College.
Dr. K. Krishnasamy is an Indian politician and former Member of the Legislative Assembly. He is the founder of Puthiya Tamilagam party. He was elected to the Tamil Nadu legislative assembly from Ottapidaram constituency in 2011 election.He also praised Periyar E. V. Ramasamy and credits him for administering justice to Dalits during the 1957 Ramnad riots. His views are echoed by Punitha Pandian of Dalit Murasu. One of the richest dalit politician and owns asset worth 17 crore.