Madhan (July 11-1947 Born - Srirangam), whose real name is Maadapoosi Krishnaswamy Govinda Kumar, is a famous Tamil cartoonist, journalist, writer and film critic who works for Ananda Vikatan magazine, a leading Tamil weekly. Though his native is Thanjavur, he was brought up in Chennai. He did his schooling at Triplicane Hindu School and his college education at Vivekananda College, Chennai.

During 1970s, he started his career as cartoonist at Ananda Vikatan magazine. Later he was assistant editor of Ananda Vikatan and Junior Vikatan. He also answers to the questions asked from the readers in Hi Madhan in Ananda Vikatan which is very popular and informative. He anchored a program in SUN TV channel in 1999, answering viewer's questions in various fields specially science and history. He wrote the dialogue for Anbe Sivam, a 2003 film in which he also had a brief appearance, and is the author of Vandhargal Vendrargal, an account of Mughal rule in India. He is also author of Manithanukkul Mirugum series in Ananda Vikatan which was later released as a book. He also anchored a popular movie review programme named "Madhan's Thirai Paarvai" in Star Vijay television. He is currently anchoring the film review programme called "Madhan's Talkies" in the Tamil channel Jaya TV. He's the only film critic in the world who uses a cartoon to represent a film. He was also closely associated with writer Sujatha.

Madhan Karky Vairamuthu (Tamil: மதன் கார்கி வைரமுத்து) is an Southindian lyricist, research associate, software engineer, and film dialogue writer. He is better known as the son of poet and lyricist Vairamuthu. He is also an assistant professor of computer science at the College of Engineering, Guindy.

Madhan Karky is the eldest son of notable lyricist Vairamuthu and Ponmani. He completed his bachelor's degree in computer engineering at the College of Engineering, Guindy in 2001. He further completed postgraduate studies in information technology at the University of Queensland, Brisbane, Australia in 2004, where he also worked as an assistant professor.

He worked as a technical volunteer for the Indian Science Congress and National Children's Science Congress in 1998 held at Anna University, Chennai, India. During 1997-1998, he was a Navy Cadet in National Cadet Corps. He was the course organiser for the Multimedia Workshop conducted as a part of the activities of RCILTS-Tamil at Anna University in 2001. He served as Executive Member, Secretary and Webmaster for Computer Society of Anna University during the years of undergraduate study. As the member of Computer Society of Anna University, he worked with Lions Club, Chennai to conduct computer awareness courses to the State School teachers in 2001. He was the event organiser of ABACUS2001 in Anna University in 2001. While studying in High School, he participated in Road Safety Patrol and was the President of the Young Students Society.