Chinna Thambi (transl. Little Brother) is a 1991 Indian Tamil-language romantic musical drama film written and directed by P. Vasu. The film stars Prabhu as the titular character, an uneducated village simpleton and Khushbu as Nandini, a homeschooled wealthy girl. Manorama, Radha Ravi, Uday Prakash, Rajeshkumar, and Goundamani play supporting roles. The music was composed by Ilaiyaraaja, and the film released on 12 April 1991.

The film was remade in Kannada as Ramachaari (1991), Telugu as Chanti (1992) and Hindi as Anari (1993). The film was one of Prabhu's biggest blockbusters and completed a 356-day run in 9 screens and 100-day run in 47 screens.