The Reserve Bank of India is the central bank of the country since 1934. It regulates the Indian banking sector, controls credit, issues licenses and functions as a banker of all banks and the government. The State Bank of India is the oldest, largest and most succesful commercial bank in the country and offers the widest range of domestic and international products and services. 

Some of the key international banks in India include:

• ABN AMRO Bank: http://www.abnamro.co.in
• Abu Dhabi Commercial Bank: http://www.adcbindia.com
• American Express Bank: http://www.americanexpress.com/india
• HSBC Bank: http://www.hsbc.co.in
• Deutsche Bank: http://www.db.com/india
• CitiBank: http://www.online.citibank.co.in
  

Some leading Indian banks include:

• State Bank of India: http://www.sbi.co.in
• Central Bank of India: http://www.centralbankofindia.co.in
• Canara Bank: http://www.canarabank.com
• ING Vysya Bank: http://www.ingvysyabank.com
• Andhra Bank: http://andhrabank.in
  

For a complete listing of all banks in India, click here.

For a more detailed understanding of the banking system in India, please click here.