Dhoom 2, also known as Dhoom 2: Back in Action and stylized as Dhoom: 2, is a 2006 Indian Hindi-language heist action thriller film directed by Sanjay Gadhvi and written by Vijay Krishna Acharya, based on a story by producer Aditya Chopra, who backed the film at an estimated budget of ₹350 million under the banner Yash Raj Films. The film stars Hrithik Roshan, Abhishek Bachchan, Aishwarya Rai, Bipasha Basu and Uday Chopra. Dhoom 2 was shot primarily in India, Durban and Rio de Janeiro, becoming the first major Hindi film to be shot in Brazil. It is a sequel to the 2004 film Dhoom and is the second installment in the Dhoom series. Bachchan and Chopra reprise their roles as buddy cops Jai Dixit and Ali Khan, respectively. Yash Raj Films also collaborated with Pepe Jeans and Coca-Cola for the film's promotional tie-ups.

Sanjay Gadhvi was an Indian film director and writer, who was known for the first two instalments of the Dhoom series.