The cast of the upcoming film includes Mammootty, Naseeruddin Shah, Sai Pallavi, Sreeleela, among others.

Music for Om is composed by Sai Abhyankkar, with the first track 'Alaakaa Loova' being released on Dhanush's birthday. An unplugged version of the song was also released.

The crew of Om includes cinematographer Ezhil Arasu K, editor R Kalaivanan, production designer Rajeevan, art director A Pannerselvam, and stunt choreographers Yannick Ben and Kecha Khamphakdee.

Dhanush is producing the upcoming film under his Wunderbar Studios banner. Other producers includes Shraddha Agrawal and Azmat Jagmag. RTake Studios is also backing the upcoming film.