Nani Gentleman (or simply Gentleman) is a 2016 Indian Telugu-language romantic thriller film directed by Mohan Krishna Indraganti and co-written by R. David Nathan. Produced by Sivalenka Krishna Prasad's Sridevi Movies, Gentleman features Nani in double role, Nivetha Thomas and Surbhi in the lead roles; it marked Prasad's return to film production after an eight-year hiatus. Srinivas Avasarala, Sreemukhi, and Rohini play supporting roles.

The film narrates the story of two women, Aishwarya and Catherine, whose respective lovers, Jayaram "Jai" Mullapudi and Gautham, are lookalikes. When Gautham dies in an accident, Catherine suspects Jai's role in it and spies on him, which reveals further truths about Jai and the people around him, including Gautham. P. G. Vinda was the film's director of photography. Mani Sharma composed the soundtrack and score; Marthand K. Venkatesh edited the film. Principal photography commenced in November 2015 and lasted until April 2016. Except for a schedule in Kodaikanal, the majority of the film's portions were shot in and around Hyderabad.

Produced on a budget of ₹150 million, Gentleman was released on 17 June 2016 in 700 screens globally. It was also the third biggest South Indian film released in the United States to that point in terms of screen-count. Post release, the film received positive reviews with praise for the performances, Sharma's score, and the scripting. It was commercially successful, grossing a total of ₹326 million globally, with a distributor share of ₹177.2 million. The film was remade into Bengali as Villain (2018).