Kalyug (transl. Modern era) is a 2005 Indian Hindi-language action thriller film written and directed by Mohit Suri and produced by Mukesh Bhatt. It introduces actor Kunal Khemu, in his debut film as an adult actor. It also stars Emraan Hashmi, Smilie Suri, Deepal Shaw, Amrita Singh and Ashutosh Rana. The film follows a young man who sets out to exact revenge upon the porn industry after his wife commits suicide due to the footage of their first night getting released on the internet by some people in the hotel.

Kalyug was released on 9 December 2005. It featured the hardcore pornographic website indiapasssion.com, which inspired a real website of the same name.