Santosh Subramaniam (spelt Santhosh Subramaniyam onscreen)[2] is a 2008 Indian Tamil-language romantic comedy film directed by Mohan Raja and produced by Kalpathi S. Agoram.

The film stars Ravi Mohan and Genelia while Prakash Raj, Geetha and Sayaji Shinde play supporting roles.

The film was positively received and commercially successful; critics praised the performances of Ravi, Genelia and Prakash Raj.

One day, Santosh meets Hasini, a college student and is immediately attracted seeing her childish attitude and jovial nature.

Santosh asks Hasini to try impressing his family members, fearing Subramaniam might not accept for the wedding.

Subramaniam realises his mistake and apologises to everyone saying that he always wanted to take care of his family members so well but had never thought that they are sacrificing a lot to make him happy.

[4] Editor Mohan, under his home company Jayam Combines, outbid Prakash Raj, who wanted to remake the film with Vishal in the lead role.

[12] The invitation for the launch featured many successful father-son duos from various fields,[12] such as Sivaji Ganesan and Prabhu, Sivakumar and Suriya, and Sathyaraj and Sibiraj.

[13] Genelia D'Souza was chosen to play the female lead Hasini, reprising her role from the original film.

[16] Former cricketer Sadagoppan Ramesh made his acting debut in this film, playing Santosh's elder brother.

One song depicting the marriage of Premgi Amaran's character was shot in several temples "in and around Kumbakonam" in Tamil Nadu.

[21] According to Raja, the film was inspired by his own life: "My friend took the essence of my story and made the Telugu blockbuster, which I then remade in Tamil".

[32] Despite being released during the season of the Indian Premier League, it took a big opening and enjoyed a theatrical run of one hundred days due to positive critical reviews and favourable word of mouth.

[33][34] The reception in the United Kingdom, comparatively for a Tamil film, was equally successful, entering the UK box office at number 40.

[35] The film collected £10,067 in its first week of opening and earned a cumulative gross of £24,962 in its three-week box office run.

[37] Malathi Rangarajan of The Hindu praised the music, locations and the main cast's performances, and wrote that in the film, "dull moments are rare, enjoyable ones aplenty".

[16] Sify said D'Souza's portrayal is "the soul of the film" and its "biggest strength"; the reviewer called Ravi's performance "mature" and Prakash Raj's "outstanding".