Rasavathi, also known and marketed as Rasavathi: The Alchemist, is a 2024 Indian Tamil-language romantic thriller film written, produced and directed by Santhakumar. It stars Arjun Das, Tanya Ravichandran, Reshma Venkatesh, and Sujith Shankar in lead roles. The soundtrack and background score were composed by S. Thaman, while the cinematography and editing were handled by Saravanan Ilavarasu and Shiva GRN, and V. J. Sabu Joseph.

It was extensively shot in Kodaikanal, Madurai, Cuddalore and Palani.

It theatrically released on 10 May 2024. The film received positive reviews from critics and audiences.