Nani Gentleman (or simply Gentleman) is a 2016 Indian Telugu-language romantic thriller film directed by Mohan Krishna Indraganti who wrote the film with R. David Nathan. Produced by Sivalenka Krishna Prasad's Sridevi Movies, Gentleman stars Nani in double role alongside Surbhi, Nivetha Thomas, Tanikella Bharani, Srinivas Avasarala and Vennela Kishore. The film narrates the story of two women, Aishwarya and Catherine, whose respective lovers, Jayaram 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.

The film marked Prasad's return to film production after an eight-year hiatus. 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 ₹15 crore, 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 from critics and audience, where it become a commercial success at the box office, grossing a total of ₹32.6 crore globally, with a distributor share of ₹16.3 crore. Nivetha Thomas won SIIMA Award for Best Female Debut (Telugu) at 6th South Indian International Movie Awards for her role in the film. The film was remade in Bengali as Villain in 2018.