Dr. K. A. Manoharan (born 21 February 1951) is an Indian politician and was elected in as a Member of Tamil Nadu Legislative Assembly from Hosur constituency.

Manoharan is the eldest son of veteran politician Mr. K. Appavu Pillai[5] and Mrs. Ponnammal, was born in Hosur on 21 February 1951.

He Studied in PSG College of Arts and Science, Coimbatore and completed his bachelor degree.

K.A Manoharan has been conferred Honorary Doctorates by the National Virtue University of Peace and Education in March 2019.

In 1991, he was elected to the Tamil Nadu Legislative Assembly from Hosur constituency.