Rog (Hindi: रोग, Urdu: روگ, translation: malady), is a 2005 Hindi-language Bollywood thriller film directed by Himanshu Brahmbhatt, written by Mahesh Bhatt and produced by Pooja Bhatt. The film stars Irrfan Khan and former model, Ilene Hamann in the lead roles. Its plot is based on the 1944 Hollywood suspense thriller, Laura.

Uday Singh Rathod (Irrfan Khan) is a law-abiding police officer, famous for his extraordinary investigations, but is experiencing insomnia. When Maya Solomon (Ilene Hamann), a famous model is murdered, Rathod is given the custody of the case and he is asked to solve it within a week. Three people are shortlisted as prime suspects; Harsh (Suhel Seth), a famous journalist, Ali (Himanshu Malik), a millionaire and Shyamoli (Shyamoli Verma), his partner.

When investigation begins, Harsh offers his help to Rathod in hunting down the murderer, while drawing his attention to the fact that Maya was about to get married to Ali, but because Ali was a womanizer, he couldn't keep up with one woman. So he, together with Shyamoli, killed Maya. Rathod theorizes on these lines and goes to Ali's house with Harsh.