- A placename
- Windsor, Berkshire, UK; A town in Berkshire, England — famous for Windsor Castle
- Windsor, Ontario, Canada; A city in Essex County; famous for its auto industry.
- Several other places in England, Australia, Canada and the United States
- A habitational surname from the town in Berkshire.
- A male given name transferred from the surname.
- The Royal House of Windsor — from the traditional seat at Windsor Castle