Sandai (transl. Fight) is a 2008 Tamil-language action comedy film directed by Sakthi Chidambaram. The film stars Sundar C, Nadhiya, Namitha and Ramya Raj, while Vivek, Lalu Alex, and Mithun Tejasvi, among others, play supporting roles. The music was composed by Dhina with cinematography done by K. S. Selva Raj and editing by G. Sasikumar. The film was released on 21 March 2008.

Vinayagar Sundar Vel, known professionally as Sundar C., is an Indian film director, writer, actor and producer who works in Tamil cinema. He has directed over 30 films and received the Kalaimamani award.