Nibunan (transl. Expert) is a 2017 Indian action thriller film co-produced and directed by Arun Vaidyanathan. The film stars Arjun Sarja in his 150th film, alongside Prasanna, Varalaxmi Sarathkumar, Sruthi Hariharan, and Vaibhav Reddy. The music was composed by S. Navin, while the cinematography and editing were handled by Arvind Krishna and Sathish Suriya. It was simultaneously filmed in Tamil and Kannada, with the Kannada version titled Vismaya (transl. Amazing).