The Greatest of All Time is an upcoming Indian Tamil-language science fiction action film directed by Venkat Prabhu and produced by AGS Entertainment. The film stars Vijay in dual roles, leading an ensemble cast that includes Prashanth, Prabhu Deva, Sneha, Laila, Meenakshi Chaudhary, Mohan, Jayaram, Ajmal Ameer, Yogi Babu, VTV Ganesh, Vaibhav, Premgi Amaren, Aravind Akash and Ajay Raj.

Initially, Atlee was reported to direct the project, but subsequently, Prabhu was brought on board. The film was announced in May 2023 under the tentative title Thalapathy 68, as it is Vijay's 68th film in a leading role, and the official title was announced in December 2023. Principal photography commenced in October 2023 in Chennai followed with a schedule in Thailand along with one in Hyderabad, which was again followed with another schedule in the former location. Yuvan Shankar Raja will compose the music. The cinematography and editing will be handled by Siddhartha Nuni and Venkat Raajen respectively.