Santander Bank, N. A. (/ˌsɑːntɑːnˈdɛər/), formerly Sovereign Bank, is a wholly owned subsidiary of Spanish Santander Group. It is based in Boston and its principal market is the northeastern United States. It has $57.5 billion in deposits, operates about 650 retail banking offices and over 2,000 ATMs, and employs approximately 9,800 people.[2] It offers an array of financial services and products including retail banking, mortgages, corporate banking, cash management, credit card, capital markets, trust and wealth management, and insurance.

Sovereign Bank was rebranded as Santander Bank on October 17, 2013;[3] the stadium, arena, and performing arts center for which it has naming rights were also rebranded.