UCO Bank, formerly United Commercial Bank, established in 1943 in Kolkata, is one of the nationalized banks in India. During FY 2020–21, its total business was ₹ 3.24 lakh crore. Based on 2020 data, it is ranked 80 on the Fortune India 500 list. UCO Bank was ranked 1948 in Forbes Global 2000 list of year 2018. As of 30 March 2017 the bank had 4,000 plus service units 49 zonal offices spread all over India. It also has two overseas branches in Singapore and Hong Kong. UCO Bank's headquarters is on BTM Sarani, Kolkata.