Onbathu Kuzhi Sampath is a 2020 Indian Tamil-language romantic drama film written and directed by Ja. Raghupathy and produced by 80-20 Pictures. The film stars Balaji Maharaja, Nikhila Vimal, and Appukutty. The music was composed by Va Charlie with cinematography by R. Kolanchi Kumar and editing by Dheena.

The film is based on Onbathu Kuzhi, a village game that involves marbles. Balaji Maharaja plays a man who is an expert at the game, while Nikhila Vimal portrays a village woman. Nikhila shot for this film while shooting for Vetrivel (2016) and Kidaari (2016).

The film began production in 2016 but was delayed. It ultimately released on 15 August 2020 via Regal Talkies, a TVOD app. This is the first Tamil feature film to be telecast on a pay-per-view model.