• Walden, a famous book written by American author Henry David Thoreau.
• The Walden School, a summer music composition camp located in Dublin, New Hampshire.
• Arthur Hay, 9th Marquess of Tweeddale Viscount Walden; in taxonomy, Walden is standard attribution. For example: Dull-blue Flycatcher Eumyias sordida (Walden, 1870)
• Rudolf Walden, a Finnish independence man, industrialist and a general, minister of defence during WWII.

Walden may also refer to particular locations :

• In Canada:
  • Walden, Nova Scotia
  • Walden, Ontario, now part of the city of Greater Sudbury
• In the United States:
  • Walden, Colorado
  • Walden, New York
  • Walden, Tennessee
  • Walden, Vermont