These are lists of the banks in the world, as measured by total assets and market capitalization.
List of largest banks Wikipedia
Relbanks 2016 statistics on largest banks in the world by total assets: Please note, that the accounting treatment affects the assets reported. For example, the United States uses US GAAP (as opposed to IFRS), which only reports the net derivative position in most cases, leading to US banks having fewer derivative assets than comparable non-US banks.
Relbanks 2017 statistics on largest banks in the world by market capitalization: