Possibly from the name of Saint Andrew (through a form Sanct Ander) or from Saint Emeterio (through forms Santemter > Santenter > Santander), a martyr whose head was brought there in the third century.
- A city and port on the north coast of Spain, the capital of the autonomous community of Cantabria
- A department in the north of Colombia. See Wikipedia:Santander Department
- A Spanish surname