Aasai () (transl. Desire) is a 1995 Indian Tamil-language romantic thriller film, written and directed by Vasanth and produced by Mani Ratnam. The film stars Ajith Kumar, Suvaluxmi and Prakash Raj, with Rohini, Poornam Viswanathan, Nizhalgal Ravi, and Vadivelu in supporting roles. It revolves around an army major lusting for his sister-in-law, and attempting to ruin her relationship with her lover.

Jeeva was the cinematographer, while Deva composed the music. The film, released on 9 September 1995, became a huge commercial success and Ajith's first major breakthrough in his career. It was remade in Hindi as Pyaar Zindagi Hai (2001).