Mouna Geethangal (transl. Silent Melodies) is a 1981 Indian Tamil-language romantic drama film written and directed by K. Bhagyaraj. The film stars Bhagyaraj himself alongside Saritha, with S. Krishnamoorthy and Master Suresh in supporting roles. It revolves around a man attempting to reconcile with his estranged ex-wife after five years.

The inspiration for the story came to Bhagyaraj from Jayakanthan's short story Unmai Sudum, and his own personal life. The film was produced by K. Gobinathan under Bhagavathi Creations, photographed by B. S. Basaviraj and edited by T. Rajasekhar, with music composed by Gangai Amaran. When the film was still under production, Bhagyaraj published the story as a serial in the magazine Kumudam.

Mouna Geethangal was released on 23 January 1981, and became a commercial success, running for over 25 weeks in theatres. In the same year it was remade in Hindi as Ek Hi Bhool and in Telugu as Sathyabhama. In 1991 it was remade in Malayalam as Chanchattam and in 1993 in Kannada as Mane Devru.