Ramya NSK is an Indian playback singer, who has predominantly sung for Tamil, Telugu and Kannada films. Apart from her work as a singer, she was a part of the second season of Biggboss Tamil. She is the granddaughter of comedian N. S. Krishnan and actress T. A. Mathuram.

Nagercoil Sudalaimuthu Krishnan, popularly known as Kalaivanar and also as NSK, was an Indian actor, comedian, theatre artist, playback singer and writer in the early stages of the Tamil film industry – in the 1940s and 1950s. He is considered as the "Charlie Chaplin of India."