Manmadan Ambu (transl. Cupid's Arrow) is a 2010 Indian Tamil-language romantic comedy film directed by K. S. Ravikumar and written by Kamal Haasan. The film stars himself, Trisha and R. Madhavan in the title roles, while featuring Sangeetha, Oviya, Ramesh Aravind, Usha Uthup, Manju Pillai and Urvashi among others in supporting roles. The film features music composed by Devi Sri Prasad, with several songs written and sung by Kamal Haasan himself, while Manush Nandan and Shan Mohammed made their debuts as cinematographer and editor.

After significant pre-production which included rehearsals of the entire script before filming, the film was extensively shot across Europe and on a cruise ship, whilst scenes were also canned across Chennai and Kodaikanal. It was produced by Udhayanidhi Stalin, Manmadan Ambu released worldwide on 23 December 2010. The movie was based on the 1948 movie Romance on the High Seas.