Tamilnad Mercantile Bank Limited (TMB) is a bank head-quartered in Tuticorin in Tamil Nadu, India. TMB was founded in 1921 as the Nadar Bank, but changed its name to Tamilnad Mercantile Bank in November 1962 to widen its appeal beyond the Nadar community. For the financial year 2009-2010, the bank reported a net profit of 7px 184.53 crores.