Hum Tum () is a 2004 Indian Hindi-language romantic comedy film directed by Kunal Kohli. Produced by Aditya Chopra under Yash Raj Films, the film stars Saif Ali Khan and Rani Mukherjee. The special effects were done by Tata Elxsi. The film released on May 28, 2004 and received positive reviews and was a box office success.