Challenge 2 is a 2012 Indian Bengali-language action thriller film directed by Raja Chanda. Produced by Shrikant Mohta under the banner of Shree Venkatesh Films. The movie is a remake of 2011 Telugu movie Dookudu which itself was inspired from German film Good Bye, Lenin! (2003). It stars Dev, Puja Banerjee, Tapas Paul, Ashish Vidyarthi and in lead roles, alongside, Rajatava Dutta, Kharaj Mukherjee, Subhasish Mukherjee and Kaushik Chakraborty in another pivotal roles, with Biswanath Basu and Labani Sarkar in guest appearances. The film is a spiritual sequel to the 2009 film Challenge, but contains a very different storyline. It revolves around an undercover officer as well as IPS Abhiraj Roy, who is on a mission to bring down the dreaded don Guru Nayak. But all on a sudden tragically he transforms into an MLA to fulfill his father's wish, who was in coma after meeting an conspiring accident as he was an honest and celebrated politician amongst the masses.

The film began production in December 2011 in Kolkata. Shooting began on 16 February 2012 in Kolkata and lasted in Turkey till mid-August 2011. The film was predominantly shot in Kolkata, with portions shot in Mumbai, Dubai, Singapore, Malaysia and Switzerland. The soundtrack of the film was composed by Jeet Gannguli and Savvy (making his debut as a composer), while the background score was by S. P. Venkatesh. Rabi Ranjan Maitra edited the film, while Shailesh Awasthhi handled the cinematography.

On the auspicious occasion of Durga Puja, Challenge 2 was released on 19 October 2012 on 1500 screens worldwide. Upon release, it received positive reviews and was superhit at the box-office. It was cited as "During this Devipokkho this film is a good option to fill-up the spare time you’ll get in between pandal-hopping" by The Times of India. It was the second highest grossing Bengali film of 2012, after Jeet starrer Awara (2012). It is the remake of 2011 Telugu blockbuster Dookudu.