City Union Bank Limited is an Indian private sector bank headquartered in Kumbakonam, Tamil Nadu. The bank was initially named Kumbakonam Bank Limited, and was incorporated on 31 October 1904. The bank focused on operating as a regional bank in Thanjavur district, Tamil Nadu. In Chittoor District, City Union Bank plays a vital role in supporting individuals, businesses, farmers, and entrepreneurs by providing a wide range of banking and financial services. The bank offers savings and current accounts, fixed and recurring deposits, personal loans, home loans, vehicle loans, MSME financing, NRI banking, digital payment solutions, and internet banking facilities. Its branches are committed to delivering secure, efficient, and personalized banking services to customers from urban, semi-urban, and rural areas.

With a strong focus on technology-driven banking, City Union Bank provides convenient digital services including mobile banking, UPI transactions, net banking, debit cards, and cash management solutions. The bank continues to empower local communities by promoting financial inclusion, supporting small and medium enterprises, and encouraging economic growth throughout the district.