Krishnan Jayakumar (born 6 October 1952) is an Indian civil servant, poet, lyricist, translator, and screenwriter.

[11] On retirement as the Chief Secretary, Jayakumar was appointed as the first Vice-Chancellor of the Thunchath Ezhuthachan Malayalam University.

He has written lyrics for nearly 100 Malayalam films and large number of songs for albums, Television and radio.

His popular film songs include Kudajadriyil Kudikollum, Chandanalepa Sugandham, Souparnikamritha Veechikal, Sooryamsuvoro Vayalpoovilum, etc.

[14] Jayakumar is the eldest son of the late eminent film director M. Krishnan Nair and K. Sulochana Devi.