The M. Ct. family, formerly known as the S. Rm. M. M. Ct. family, is a family of industrialist and bankers from Tamil Nadu, India. Belonging to the Nagarathar community, they are descendants of S. Rm. M. Chidambaram Chettiar of the S. Rm. M. family and trace their ancestral roots to Kanadukathan in the Sivaganga district.