Rathnam (transl. Gem) is a 2024 Indian Tamil-language action drama film directed by Hari and jointly produced by Stone Bench Films, Zee Studios and Invenio Origin. The film stars Vishal in the titular role, alongside Priya Bhavani Shankar in a dual role as the female lead and the hero's mother, Samuthirakani, Gautham Vasudev Menon, Yogi Babu, Murali Sharma, Hareesh Peradi, Mohan Raman and Vijayakumar. It marks the third collaboration of Vishal and Hari after Thaamirabharani and Poojai.

The film was officially announced in April 2023 under the tentative title Vishal 34, as it is Vishal's 34th film as the lead actor, and the official title was announced in December 2023. Principal photography commenced in July 2023. It was shot sporadically in several legs, with filming locations including Thoothukudi, Trichy, Karaikudi, Vellore, Tirupati, Chennai, and wrapped by late-January 2024. The music was composed by Devi Sri Prasad, while cinematography and editing were handled by M. Sukumar and T. S. Jay.

Rathnam was released on 26 April 2024 to mixed reviews from critics with praise for the cast's performance (especially Vishal), screenplay, and Devi Sri Prasad's background score and music, but criticized its excessive violence and gore, pacing, and writing due to its outdated feel as well as its loudness. The film became an average grosser at the box office.