Krishna Iyer[1] (born 20 March) is a Tamil cinema Indian playback singer[2] from Chennai, India who performs Tamil, Hindi, and Telugu songs.

His rendition of "En Uchi Mandaila" from the film Vettaikaran, composed by Vijay Antony and starring Vijay, topped the music charts for many weeks in 2009.

His first entry into the Tamil music industry was through the movie Kanthaswamy, starring Chiyaan Vikram.

Krishna rendered the rap portion of the song "En Peru Meenakumari," scored by Devi Sri Prasad.

He has worked with music directors Vijay Antony, Harris Jayaraj, Gv Prakash, Prasan Praveen Shyam, Selvanagesh, Shankar Mahadevan, Drummer Sivamani, Gopi Sundar, and Devi Sri Prasad.