Indian Bank is an Indian public sector bank, established in 1907 and headquartered in Chennai. It serves over 100 million customers with 41,645 employees, 5,814 branches with 4,929 ATMs and Cash deposit machines. Total business of the bank has touched ₹1,094,752 crore (US$140 billion) as on 31 March 2023.

The bank's Information systems and security processes are certified to meet ISO27001:2013 standard. It has overseas branches in Colombo and Singapore including Foreign Currency Banking Units at Colombo and Jaffna. It has 227 overseas correspondent banks in 75 countries. Since 1969, the Government of India has owned the bank. As per the announcement made by the Indian Finance Minister Nirmala Sitharaman on 30 August 2019, Allahabad Bank merged from 1 April 2020, making Indian Bank now the seventh largest bank in the country.

On 1 April 2020 Indian bank and Allahabad bank merged. The oldest Joint Stock Bank in the country, Allahabad Bank was founded on 24 April 1865 by a group of Europeans at Allahabad, at a juncture when organized industries, trade and banking were taking shape in India. Thus, the history of the bank now spreads over three centuries.