Ravi Madasamy (Tamil: ரவி மாடசாமி), better known as M Ravi, is a Singaporean human rights lawyer and activist. Known for his work as a cause lawyer, he has been counsel in multiple high-profile court cases in Singapore, many of which have become leading cases in Singaporean constitutional law. Ravi's activism and legal representation have led to changes in Singapore's approach toward capital punishment and LGBT rights.