Nenjathai Allitha () is a 1984 Indian Tamil-language romantic drama film directed by Ameerjan, starring Mohan, Naresh and Sadhana. It was released on 4 May 1984.
Mohan and Murali love Radhika, while she loves Murali only. The film has many twists which make Sadhana accept Mohan's love, but Murali resurfaces. The climax reveals who wins Radhika's love.
This was originally the directorial debut of Ameerjan but became the second to be released. The film's final schedule was held at Sathanur Dam where romantic scenes of Sadhana and Naresh and the song "Udhatum Udhatum" were shot.
Soundtrack was composed by M. S. Viswanathan.
Jayamanmadhan of Kalki criticised the film for being too formulaic.