Walden is a dale and hamlet in the Yorkshire Dales, North Yorkshire, England. The dale is a side dale of Wensleydale, sometimes known as Waldendale or Walden Dale to distinguish it from the hamlet. The hamlet lies 2 miles (4 km) south of West Burton at the mouth of the dale. The smaller hamlet of Walden Head lies at the head of the dale, 1 mile (2 km) south of Walden.
The name Walden, first recorded in 1270, comes from the Old Englishwala denu, meaning "valley of the Welshmen".