Ramu is a 1966 Indian Tamil-language drama film directed by A. C. Tirulokchandar and written by Javar N. Seetharaman. The film stars Gemini Ganesh and K. R. Vijaya, with Ashokan, Nagesh, V. K. Ramasamy, O. A. K. Thevar and Master Rajkumar—as the title character—in supporting roles. A remake of the Hindi film Door Gagan Ki Chhaon Mein (1964), it revolves around a boy who loses his speech after witnessing his mother's death, and his father attempts to restore his son's speech.

Ramasamy Ganesan, better known by his stage name Gemini Ganesan, was an Indian actor who worked mainly in Tamil cinema. He was referred to as the Kaadhal Mannan for his romantic roles in films. Ganesan was one of the "three biggest names of Tamil cinema", the other two being M. G. Ramachandran and Sivaji Ganesan. While Sivaji Ganesan excelled in dramatic films and M. G. Ramachandran was popular as an action hero, Gemini Ganesan was known for his romantic films. A recipient of the Padma Shri in 1971, he had also won several other awards including the Kalaimamani, the MGR Gold Medal, and the Screen Lifetime Achievement Award. He was one of the few college graduates to enter the film industry then.