Helen Nelson, (born 29 April 1991) better known professionally by her stage name Oviya, is an Indian model and actress who works in the Tamil and Malayalam films. She made her breakthrough as an actress in Sarkunam's rural romantic comedy Kalavani (2010), before appearing in other films including Pandiraj's Marina (2012), Moodar Koodam (2013) and Madha Yaanai Koottam (2013). Oviya has also enjoyed box office success through her roles in Sundar C's Kalakalappu (2012) and the horror comedy Yaamirukka Bayamey (2014). In 2017, Oviya appeared on the reality series Bigg Boss Tamil.