Bank of Yokohama
- Country: Japan
- Type: Bank
- Website: www.boy.co.jp
- Update: 05-02
The Bank of Yokohama (The Bank of Yokohama; abbreviation: BOY) Japan's leading regional bank, located in Yokohama, was founded on December 16, 1920, and is listed on the Tokyo Stock Exchange, where it is indexed as the Nikkei 225; it was ranked 992nd on Forbes' 2014 Global 2000 list of the world's largest companies.