Maruthur Gopalan Chakrapani (13 January 1911- 17 August 1986), commonly known as Ettan ("elder brother" in Malayalam), was an Indian actor and producer based in the Tamil film industry.

His parents, Gopala Menon and Sathyabhama, named him Neelakantan, but this was soon changed to Chakrapani because of his father's religious beliefs.

Soon after his birth, the family migrated to Ceylon (now Sri Lanka) where Chakrapani's two younger siblings (brother M. G. Ramachandran and a sister) were born.

His acting in the role of police inspector in Malai kallan and as villain in En Thangai are notable.

Years later, Chakrapani tried again, this time taking the director's seat in the renamed Arasa Kattalai.