Rajadhi Raja is a 1989 Indian Tamil-language masala film directed by R. Sundarrajan.
The film stars Rajinikanth in a dual role, with Nadhiya and Radha portraying his characters' love interests.
It revolves around Raja, a rich estate owner's son who seeks to avenge his father's death. He is aided in his quest by Chinnarasu, a lookalike.
Raja was released on 4 March 1989 and became a box office hit.
The film's plot centers around Raja, whose father is killed by his second wife Sarasu and her brother Aadimoolam for his property. Raja makes his friend Sethupathi, a rickshaw puller, act as Raja to bring the culprits to book, but soon finds himself framed for the crime.
In between, Raja loves Senkamalam, sister of an employee in his estate.