Eeram (transl. Moisture) is a 2009 Indian Tamil-language supernatural crime thriller film written and directed by Arivazhagan in his directorial debut and produced by S. Shankar. The film stars Aadhi, Nandha, Sindhu Menon, and Saranya Mohan, while Srinath, Lakshmi Ramakrishnan, and Krishna play supporting roles. The music was composed by S. Thaman with cinematography by Manoj Paramahamsa and editing by Kishore Te. The film was a commercial success to positive reviews from the story telling.

The film was mostly shot in Chennai, Srirangam, Trichy, Coimbatore, Hyderabad, Visakhapatnam, and Pondicherry. Filming began in January 2008, and the movie was released on 11 September 2009 to positive reviews and was declared as a blockbuster at the box office. The Telugu dubbed version of the film titled Vaishali released on 27 May 2011 and was commercially successful in Andhra Pradesh.