Which is the largest foreign bank in India?

An international bank is a financial institution that operates outside the home country and offers financial services to international customers.
A foreign bank branch should comply with the laws of both the host and home countries.
Branches of foreign banks can provide more loans than other subsidiary banks as their credit limits depend on total bank capital.
The policy of RBI on the presence of foreign banks in India is based on two basic principles: single mode of existence and reciprocity.
According to the Reserve Bank of India, there are currently 46 foreign banks in India (as of 14 July 2020).
In various sectors, India has attracted huge foreign direct investment inflows (FDI).
The term "foreign bank" generally refers to any activity of a United States banking organization located outside the United States.
The first foreign banks established a presence in the United States in the mid-1800s, with New York being the first state to license or regulate these institutions.

Summary:

The largest foreign bank in India is Standard Chartered which has its headquarters in Hong Kong.