Santosh Subramaniam (spelt Santhosh Subramaniyam onscreen) 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. It is a remake of the Telugu film, Bommarillu (2006). Genelia and Raj reprise their roles in the film, which revolves around a father and son relationship; the father dotes on his son, who resents the same. The son's choices and his ambitions to achieve something in life are subdued by his father.

The film entered production in July 2007 and in addition to being shot in India, was also shot at the South Island of New Zealand. The film's soundtrack was composed by Devi Sri Prasad, who retained most of the tunes he composed for Bommarillu.

Santosh Subramaniam was released on 11 April 2008 during the Tamil New Year festival. The film was positively received and commercially successful; critics praised the performances of Ravi, Genelia and Prakash Raj. The film won the third prize for the Best Film at the Tamil Nadu State Film Awards of 2008. It was nominated for four awards at the 56th Filmfare Awards South, including Best Film, Best Director, Best Actor and Best Actress, but did not win in any category.