Lalteen is a 2017 Nepali action thriller film directed by Dev Kumar Shrestha and produced by Anim Shrestha and Raj K.C. under the banner of M'Son Pictures, presented by Bhanu Pratap. The movie was released in theaters on June 9, 2017, and stars Dayahang Rai and Priyanka Karki in the leading roles, with Keki Adhikari and Melina Manandhar in guest appearances and Arjun Jung Shahi, Shishir Bhandari, A. Gurung, Ram Keshari Bogati, Janak Bartaula and Bhanu Pratap in supporting roles. The film also introduced Raj Katuwal and Nirjan Thapa to the big screen.

Lalteen is based on a thriller, action and gangster story, following the traditions of the crime genre in Nepali cinema. The pairing of Dayahang Rai and Priyanka Karki, two of the most popular stars of the industry at the time, was the main attraction of the film, and the chemistry between their characters drove much of the promotional interest in the movie.

The music of Lalteen was composed by Binod Dhakal, Kiran Michael and Dijraj Poudel, with music arrangement by Kiran Tuladhar and background score by Tsujil Karmacharya. The title song, sung by Bony Shrestha, was released as a lyrical video in February 2017, and all the songs of the movie were released ahead of the theatrical debut. The action sequences were choreographed by Roshan Shrestha, the cinematography was handled by Hari Ghale Lama, and the editing was done by Arjun GC and Milan Shrestha.

The trailer of the film was released in May 2017 and showcased the action-packed style of the movie. The choreography was led by Kabiraj Gahatraj, with sound design by Sunaya Man Shrestha and visual effects by Achyut Gajurel. The production design was overseen by Shakhar Pandey and Arjun Pokhrel.

Lalteen remains an important entry in the filmography of director Dev Kumar Shrestha, who also directed Happy New Year, and it showcases the star power of Dayahang Rai and Priyanka Karki in the action genre. For fans of Nepali crime films of the 2010s, Lalteen offers a classic gangster narrative with popular stars.