Sena (/seɪnɑː/) is a 2003 Indian Tamil-language crime film directed by Sujeeth. The film stars Sathyaraj, Aravind Akash and Charulatha while Anandaraj and Chandrasekhar play supporting roles. The film, produced by P. Suneetha Anandakumar, was released on 12 April 2003.^[1]

Senathipathi "Sena" took to rowdyism as a young boy in order to feed his brother Vikram. Vikram hates rowdyism and wants Sena to stop his activities. There is a gang war between Mastan Bhai and Naaga's gangs. Sena works for Mastan, and Mastan considers Sena as his best henchman. Naaga, who was Mastan's former right-hand, wants to kill him. Vikram is in love with Janu, who is the sister of police officer Sathya. Sena is close to Sathya. Later, Sathya is killed by Mastan's henchmen, and Vikram wants to punish the culprits. What transpires next forms the rest of the story.

The soundtrack was composed by D. Imman.^[2]

Malini Mannath of Chennai Online wrote "Blood and gore abound in the script. And it's ironical that the director in order to convey his message that violence doesn't pay, has used extreme forms of violence on the screen!".^[3]