Bell Sound) is a 1963 Indian Tamil-language drama film, directed by P. Madhavan, his directorial debut.

The film, inspired by Victor Hugo's French novel, The Hunchback of Notre-Dame, stars Kalyan Kumar, M. R. Radha, R. Muthuraman, C. R. Vijayakumari, V. Nagayya, Nagesh, Pushpalatha and Kumari Rukmani.

[1] An egotistical rich man (M. R. Radha) abandons his elder son (Kalyan Kumar) because of his physical imperfections.

He falls in love with his cousin (C. R. Vijayakumari), who is very close to the hunchback, treating him like a brother.

Mani Osai is the directorial debut of P. Madhavan, and was inspired by French writer Victor Hugo's 1831 novel, The Hunchback of Notre-Dame.