Mani Ratnam (eigentlich G. Subramaniam; Tamilisch: மணிரத்னம்; * 2. Juni 1956 in Madurai, Tamil Nadu) ist ein indischer Drehbuchautor, Filmproduzent und Filmregisseur. ()
The man who revolutionized Tamil-language cinema, Mani Ratnam is the biggest director in south India and one of the most respected directors in all of India. Each of his films contains its own unique style, with beautifully photographed songs and unique back-lighting. However, his films contain substance as well as style--Ratnam has dealt with a wide variety of topics, from the classic Indian love story to political thrillers.