Red Soil) is a 1969 Indian Tamil-language romantic action film written, produced and directed by C. V. Sridhar.

The film stars Sivaji Ganesan and Kanchana, with S. V. Ranga Rao, M. N. Nambiar, Muthuraman, Nagesh and Sachu in supporting roles.

It revolves around an Inspector General's son (Ganesan) and a princess (Kanchana) who rebel against the tyrannical ruler (Nambiar) of their region.

Sridhar initially began work on a film titled Andru Sinthiya Ratham (transl.

The Portuguese want to set up an army base in Vasanthapuri, a territory in Tamil Nadu, India.

They approach Diwan, a corrupt ruler of the area and decide to make him the king if he agrees to carry out the plan.

Ananth, who lost his father in the shootout, swears that he will have revenge for the outrage when his friend Bharat, son of the Inspector General Chandrasekar, returns from abroad.

Meanwhile, Chithralekha, the princess of Vasanthapuri, is living in Zurich, Switzerland, and is completely unaware that her native place is in danger.

That night, Chithralekha meets him at a club and congratulates him for his performance, while introducing herself as "Vasanthi" to hide her true identity.

However, Chitralekha takes the guise of a normal girl because she does not want anyone to know that the princess is still alive, and to aide Bharat.

Ananth's mother also dies in the shock of her son's death, making Bharat and his friends more determined to save Vasanthapuri.

Sridhar began work on a film titled Andru Sinthiya Ratham, with M. G. Ramachandran starring.

[5] According to Sridhar, the reason for Ramachandran backing out may have been that, since Sridhar launched both Kadhalikka Neramillai (1964) and Andru Sindhiya Ratham at the same time, he promoted Kadhalikka Neramillai as the first contemporary colour film but did not do the same for Andru Sindhiya Ratham, which may have made Ramachandran upset, causing him to leave.

[5][6] Sridhar later revived the project under the title Sivandha Mann with changes in the script, and Sivaji Ganesan as the new lead actor.

[21] Viswanathan called the tune "a mix of Persian form of music to support the sequence in the film".