NGK (an abbreviation for Nandha Gopalan Kumaran) is a 2019 Indian Tamil-language political action film written and directed by Selvaraghavan. Suriya stars in the title role with, Sai Pallavi and Rakul Preet Singh as the lead actresses while Devaraj, Ponvannan, Nizhalgal Ravi, and Rajkumar play supporting roles. Yuvan Shankar Raja composed the music and Sivakumar Vijayan was the cinematographer. The film was produced by S. R. Prakashbabu and S. R. Prabhu of Dream Warrior Pictures.

Pre-production and principal photography commenced in January 2018, concluding the following year in January. The film was released on 31 May 2019 to a mixed reception from both critics and audience.