Villu (transl. Bow) is a 2009 Indian Tamil-language action comedy film directed by Prabhu Deva and produced by Ayngaran International. The film stars Vijay in the main dual lead role as father and son alongside Nayanthara, Ranjitha, Prakash Raj, Vadivelu, Manoj K. Jayan, Devaraj, Anandaraj, and Sriman. Mumaith Khan, Zabyn Khan, and Khushbu appear as item numbers. It is a remake of the 1998 Hindi film Soldier. The film follows Pugazh, an undercover police officer, who avenges the death of his father who was an honest army officer falsely accused and killed by corrupt army officer. It was a hit at the box office

The film was officially announced in December 2007 under the initial title Pugazh, which was later changed to Singam, which was later changed to Vill after Deva received a copyright notice from Hari, which was soon after changed and finalised to be Villu after a negotiation with S. J. Suryah. Principal photography commenced in June 2008. It was sporadically in several legs, with filming locations including Palani, Karaikudi and Bangkok. The film has music composed by Devi Sri Prasad, cinematography handled by Ravi Varman and editing by Kola Bhaskar.

Villu was released worldwide on 12 January 2009 in the theatres to negative reviews from critics. Despite this, it was a success at the domestic box office. The film acquired #221 spot in 2009 at the United Kingdom box office and collected well overseas. Villu settled to an overall domestic profit of ₹50 lakhs.

Rediff pointed out that, Vadivelu and Vijay were applauded for their style of slap-stick humor in the film. Media outlets reported that, the film Villu became an successful domestic venture as Vijay and Vadivelu comic-timing was a graceful combination and the screenplay, dialogues and dubbing were extraordinary .

A re-edited comical 4K version of Villu with very less serious scenes was scheduled to re-release worldwide in theatres on June 21, 2024. Vadivelu's version of My name is Billa song will be included in the re-release.