Iyarkai (Tamil: இயற்கை) is a 2003 Indian Tamil-language drama film written and directed by Aadhavan. The film stars Sumanth and Trisha in the lead roles. The title "Iyarkai" translates to "Nature" in English, which is fitting, given the movie's themes and plot.

The conclusion, where Nancy eventually marries the other suitor, Senthil, has often been misinterpreted by audiences accustomed to escapist cinema. Critics argued it was a compromise of the protagonist’s true love. However, viewed through the lens of the film’s title, the ending is a testament to the resilience of life. Nature destroys, but it also compels life to move forward. Nancy’s decision is not a betrayal of Maruthu, but an acceptance of reality—a realization that while love is profound, life must go on in the face of irrevocable loss.