Thenmerku Paruvakatru (transl. Southwest Monsoon Breeze) is a 2010 Indian Tamil-language drama film written and directed by Seenu Ramasamy and produced by Shibu Issac. The film is named after a song composed by A. R. Rahman for the film, Karuthamma. It stars Vijay Sethupathi, Vasundhara Kashyap and Saranya Ponvannan in her 100th film, which won her Best Actress at National film Awards. The music was composed by N. R. Raghunanthan with cinematography by Chezhiyan and editing by Mu. Kasivishwanathan.

The film released on 24 December 2010 to moderate reviews and did average collections.

The film received mixed reviews, but was eventually featured at the 58th National Film Awards ceremony, where it was named the Best Feature Film in Tamil while Saranya Ponvannan and lyricist Vairamuthu were awarded the Best Actress and Best Lyricist prizes, respectively.