Velaikkaran (transl. Worker) is a 2017 Indian Tamil-language action thriller film written and directed by Mohan Raja. Produced by R. D. Raja under his banner 24AM Studios. The film stars Sivakarthikeyan, Fahadh Faasil, Nayanthara, Sneha and Prakash Raj in lead roles. Mahesh Manjrekar, Sathish, Thambi Ramaiah, RJ Balaji, Vijay Vasanth, Robo Shankar and Rohini play supporting roles. The film's music is composed by Anirudh Ravichander, with cinematography by Ramji. The film is based on a sales executive named Arivazhagan (Sivakarthikeyan) who fights against food adulteration committed by high-class companies.

The film was released on 22 December 2017 to positive reviews with praise for Sivakarthikeyan and Fahadh Fassil's performance, story, social message, screenplay, cinematography, Anirudh's soundtrack and background score.