Eeram (transl. Moisture) is a 2009 Indian Tamil-language horror thriller film written and directed by Arivazhagan in his directorial debut and produced by S. Shankar. The film stars Aadhi Pinisetty, Nandaa and Sindhu Menon. Saranya Mohan, Srinath, Lakshmi Ramakrishnan, and Krishna play supporting roles. The music was composed by S. Thaman in his debut Tamil film with cinematography by Manoj Paramahamsa and editing by Kishore Te.

Eeram was mostly shot in Chennai, Srirangam, Tiruchirappalli and Pondicherry. The film was released on 11 September 2009 and became a commercial success. The film received critical acclaim for its theme, narrative, cast performance, cinematography, musical score, and direction. Over the years it has attained cult status. The Telugu dubbed version of the film titled Vaishali released on 27 May 2011, and was commercially successful as well.