Om is an upcoming Indian Tamil-language action thriller film written and directed by Rajkumar Periasamy. It is produced by Wunderbar Films and RTake Studios. The film stars Dhanush, Mammootty, Sai Pallavi and Sreeleela, with Naseeruddin Shah and Indrans in supporting roles.

The film was officially announced in November 2024 under the tentative title D55, denoting Dhanush's 55th film as a lead actor. Originally backed by Gopuram Films, the project was later moved to Wunderbar Films, with RTake Studios joining as co-producer. Principal photography commenced in February 2026. The official title was announced the following June. The film has music composed by Sai Abhyankkar, cinematography handled by Ezhil Arasu K and editing by R. Kalaivanan.

Om is scheduled to be released worldwide on 20 November 2026 in theatres.

Cast Dhanush Mammootty as Burma Karthikeyan (Siya) Sai Pallavi Sreeleela Naseeruddin Shah Indrans

Production Development In March 2024, it was reported that actor Dhanush could be teaming up with director Rajkumar Periasamy, who was then completing Amaran (2024). That December, Rajkumar discussed the story he had chosen for Dhanush. He explained that the film would focus on "unsung heroes" who live within society without being widely known. The protagonist, played by Dhanush, would represent one of the figures. Later, in March 2025, Rajkumar said that the film was not originally written specifically for Dhanush. When he first met the actor, Dhanush gave him freedom to choose whichever of his ideas he wanted to develop. Rajkumar eventually presented two different story ideas, from which Dhanush selected the one based on a real-life incident.

On 8 November 2024, the collaboration was officially announced. Rajkumar announced that he would direct Dhanush in his 55th film as a leading actor, provisionally titled D55. The announcement came only about a week after Amaran's theatrical release. The initial producers were G. N. Anbu Chezhiyan and Sushmita Anbu Chezhiyan of Gopuram Films, reuniting with Dhanush after Thanga Magan (2015). The project was launched with a muhurat puja ceremony attended by the film's cast and crew, along with filmmaker Vetrimaaran.

Pre-production Pre-productions works were underway by December 2024. In March 2025, Rajkumar said that filming was expected to begin around June 2025, because Dhanush had several other projects occupying his schedule. The following November, reports emerged that Gopuram Films had stepped away from the project because of an alleged increase in production costs. There was also speculation that Dhanush's Wunderbar Films would take over, and Kamal Haasan's Raaj Kamal Films International might join producing the project.

On 22 January 2026, the production change became official. Wunderbar Films joined with RTake Studios, which last produced Salaam Venky (2022), to produce the film. On 29 January, Sai Abhyankkar was officially announced as composer. By February 2026, the technical crew, consisting of cinematographer Ezhil Arasu K, editor R. Kalaivanan, publicity designer Kabilan Chelliah and art director Rajeevan, had been announced. On 18 June, the official title Om was announced.

Casting

Before the final female cast was announced, Pooja Hegde was reported as being considered for the project. In November 2025, Sai Pallavi's possible casting began circulating in reports. By February 2026, her participation became official. Her casting reunites her with Dhanush after Maari 2 (2018) and Rajkumar after Amaran. Sreeleela was officially announced as the part of the cast on 31 January 2026. The project marked her first collaboration with Dhanush and second Tamil film after Parasakthi (2026). Mammootty's casting was officially announced on 4 February 2026.

In his 2026 interview, Rajkumar revealed that Mammootty had been his first choice for the character even before principal photography. He subsequently explained that he spent approximately seven months trying to get Mammootty to accept the role. The actor reportedly received as remuneration. In late May, it was reported that Indrans was in talks to join the film. He was subsequently confirmed as part of the cast, during the June title announcement. Hindi actor Naseeruddin Shah joined the project later than the principal cast members. His casting was announced in July 2026. Shah's participation marks his return to Tamil cinema approximately 26 years after Hey Ram (2000).

Filming Filming did not begin in June 2025 as initially expected. Filming was underway by early 2026, following the producer change and the finalisation of the principal cast. Reports indicate that filming began in Chennai and subsequently moved to locations including Chengalpattu and other areas around Tamil Nadu. One reported schedule involved a large purpose-built temple/festival set constructed outside Chennai. The sequence reportedly involved Dhanush and Mammootty, while a later schedule was planned to include a song featuring Dhanush and Sreeleela. In May, choreographer Sandy revealed that they had shot a major song choreographed by him, featuring Dhanush. He said Dhanush would be dancing throughout the song, rather than appearing only briefly, and described the performance as particularly energetic.

At the title launch on 18 June, Rajkumar stated that approximately 60–65% of filming had been completed. In July, the production moved to Malaysia for what was described as the final shooting schedule. Dhanush, Mammootty and Naseeruddin Shah were reported to be involved in this schedule. On 31 July, Mammootty completed his portions. Mammootty Kampany, his production company, confirmed that he had returned to Kochi after completing his work. By early August, filming was also taking place around the Tiruvannamalai district. Dhanush was reported to be filming near the Arunachalesvara Temple, with reports identifying this as part of the final phase of production.

Music The soundtrack is composed by Sai Abhyankkar, in his first collaboration with Dhanush and Periasamy. The first single "Alaakaa Loova" was released on 28 July 2026, Dhanush's birthday.

Release Theatrical Om is scheduled to release theatrically on 20 November 2026 worldwide. Earlier it was scheduled to release on 16 October, but was delayed to avoid clashing with Jailer 2, which secured a 15 October release.

Home media The digital streaming rights were acquired by Netflix.

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