Chennai Express is a 2013 Indian Hindi-language action comedy film directed by Rohit Shetty and written by Sajid-Farhad and Yunus Sajawal. Produced by Gauri Khan, Karim Morani, Ronnie Screwvala and Siddharth Roy Kapur, the film stars Shah Rukh Khan as Rahul Mithaiwala, a man who accidentally boards the eponymous train and journeys from Mumbai to Rameswaram, falling in love with the daughter of a local don, played by Deepika Padukone. Chennai Express had Nikitin Dheer and Sathyaraj play supporting roles. It was released with subtitles in English, French, Spanish, Arabic, German, Hebrew, Dutch, Turkish and Malay.
The first planned collaboration between Khan and Shetty was a remake of Angoor (1982). The script of Chennai Express, which was initially written as a backup project for Khan, was chosen instead. Conceived as a “commercial” romance, the film was originally titled Ready Steady Po. Filming began in Mehboob Studio in October 2012 and was completed by May 2013. A large part of the film was set in Ooty, for which sets were constructed in Wai. The soundtrack for Chennai Express was composed by Vishal–Shekhar, with the background score being composed by Amar Mohile. UTV Motion Pictures acquired the distribution rights of the film.
Chennai Express was released theatrically in overseas markets on 8 August 2013 and a day later in India. The film received mixed reviews from critics. Regardless, it broke several box office records in India and abroad, becoming the quickest film to collect ₹1 billion (US$14 million) net domestically. The film surpassed 3 Idiots to become the highest-grossing Bollywood film worldwide at that point. As of March 2018, it is the eleventh-highest-grossing Bollywood film worldwide. Chennai Express is also the first Bollywood film which was released on the same day in India and Peru.