Eega (transl. The Fly) is a 2012 Indian Telugu-language fantasy action film written and directed by S. S. Rajamouli. The film was produced by Sai Korrapati's Vaaraahi Chalana Chitram with an estimated budget of ₹30–40 crore (US$6–7 million). It was filmed simultaneously in Tamil with the title Naan Ee (transl. I, the Fly). The film stars Nani, Samantha, and Sudeepa. M. M. Keeravani composed the songs and the background score, while K. K. Senthil Kumar was the director of photography. Janardhana Maharshi and Crazy Mohan wrote the dialogue for the Telugu and Tamil versions, respectively.

The film's narrative is in the form of a bedtime story told by a father to his daughter. Its protagonist, Nani, who is in love with his neighbour Bindu, is murdered by a wealthy industrialist named Sudeep, who is attracted to Bindu and considers Nani a rival. Nani reincarnates as a housefly and tries to avenge his death and protect Bindu from an obsessive Sudeep.

The idea for the film originated in the mid-1990s from a conversation in which Rajamouli's father and screenwriter V. Vijayendra Prasad joked with Rajamouli about the idea of a fly seeking revenge against a human. Rajamouli reconsidered the idea after finishing Maryada Ramanna (2010), and developed it into a script. The film's production began on 7 December 2010 at Ramanaidu Studios in Hyderabad. Principal photography began on 22 February 2011 and continued until late February 2012. Makuta VFX and Annapurna Studios oversaw Eega's visual effects and digital intermediate process, respectively.

The two versions of the film, alongside a Malayalam-dubbed version titled Eecha, were released on 6 July 2012 on approximately 1,100 screens globally. The performances of the cast (particularly Nani, Sudeep and Samantha), Rajamouli's direction, and visual effects received critical acclaim upon release. Eega was one of the highest-grossing Telugu films of the year, earning more than ₹125 crore ($23 million). Eega won two National Film Awards (Best Feature Film in Telugu and Best Special Effects), five South Filmfare Awards including Best Telugu Film, Best Telugu Director, Best Telugu Actress (Samantha) and Best Telugu Supporting Actor (Sudeep) and three South Indian International Movie Awards. The film won nine awards, including Most Original Film at the Toronto After Dark Film Festival. Eega was listed among "The 25 Best Foreign Films of the Decade" by The Ringer.

A young girl who is unable to sleep asks her father to tell her a bedtime story. Although reluctant at first, he tells her a story of a fly named Nani.

Nani is a young man based in Hyderabad who specialises in preparing fireworks. He is in love with his neighbour Bindu, a micro artist who runs an NGO. Bindu also develops romantic feelings for Nani though she does not express them. Seeking to raise money for her NGO, Bindu visits the office of a rich and powerful industrialist named Sudeep, who also finds her attractive and starts lusting for her. He donates ₹15 lakh (US$28,000), and befriends her. As days go on Sudeep's attempts to woo her fail miserably as she does not even notice his intentions. One day he sees Nani following Bindu on the street and realizes that they are attracted to one another. Sudeep sees Nani as a rival and plans to kill him, to avoid competition. One night, Nani inspires Bindu to help her finish a piece of micro art—a heart locket made from a pencil. While returning home, Sudeep kidnaps and strangles Nani to death, making his death look like an accident. Before dying, Nani curses Sudeep, swearing to kill Sudeep if he tries to hurt Bindu. Unaware of the incident, Bindu confesses her love for the dying Nani by phone; it is the last thing Nani hears before he dies. Sudeep leaves the place with his men. Nani is then reincarnated as a housefly, but cannot remember his previous life.

Nani, now a fly, struggles to regain his memory, which gets triggered when it encounters Sudeep and Bindu and begins to devote itself to exacting revenge on Sudeep. Sudeep asks the heartbroken Bindu to accompany him to New Delhi to meet the education minister; if she can impress the minister with a presentation about the NGO, he might help it gain national recognition. The fly causes Sudeep to have a freak accident on his way to the airport and writes "I will kill you" on the windshield; this makes Sudeep paranoid. The fly, who sees Bindu mourning Nani's death in her bedroom, reveals itself to be Nani by writing on the desk with her tears. It conveys the circumstances of Nani's death to Bindu, and they join forces against Sudeep. The latter's obsession with the fly affects his professional and personal life. In a chain of events, his black money is burnt to ashes, leaving him almost penniless.

Sudeep learns from a sorcerer named Tantra that the fly is none other than Nani, and that he yearns for revenge. Sudeep gets scared, and arranges to kill Nani at his home, but the fly escapes after causing a short circuit and a fire, which locks up the room. Tantra is killed in an accident and Sudeep is left unconscious from the smoke. Nani and Bindu assume Sudeep is dead, but he is saved by his business partner Adithya. Sudeep is enraged when he learns that Bindu is helping the fly. Sudeep kills Adithya to collect a ₹700 crore (US$130 million) insurance policy, as well as to prevent his investors from taking action against his company.